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‎A+B (Trial Problem).cpp

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// https://codeforces.com/problemset/problem/1351/A
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#include <bits/stdc++.h>
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#define fi first
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#define se second
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#define pb push_back
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#define mp make_pair
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#define ll long long
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#define pll pair<long, long>
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#define vll vector<long long>
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#define inf 1e18
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#define range(a,b) substr(a,b-a+1)
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#define FIO ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
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using namespace std;
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int main()
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{
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FIO;
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#ifndef ONLINE_JUDGE
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//remove this piece of code when this has to be submitted in kickstart
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freopen("input.txt", "r", stdin);
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freopen("output.txt", "w", stdout);
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//freopen is used to associate a file with stdin or stdout stream in C++
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#endif
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ll t;
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cin >> t;
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while (t--) {
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ll a, b;
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cin >> a >> b;
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cout << a + b << "\n";
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}
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return 0;
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}

‎ABC String.cpp

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// https://codeforces.com/contest/1494/problem/A
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#include <bits/stdc++.h>
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#define fi first
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#define se second
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#define pb push_back
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#define mp make_pair
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#define ll long long
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#define pll pair<long, long>
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#define vll vector<long long>
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#define inf 1e18
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#define range(a,b) substr(a,b-a+1)
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#define FIO ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
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using namespace std;
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int main()
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{
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FIO;
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int t;
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cin >> t;
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string temp, ans;
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while(t--) {
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cin >> temp;
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if (temp[0] == temp[temp.size() - 1]) {
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cout << "NO\n";
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continue;
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}
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else {
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char open = temp[0];
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char close = temp[temp.size() - 1];
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int ans = 0;
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for (int i = 0; i < temp.size(); i++) {
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if (temp[i] == open)
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ans++;
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else
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ans--;
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if (ans < 0)
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break;
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}
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if (!ans) {
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cout << "YES\n";
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continue;
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}
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else {
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ans = 0;
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for (int i = 0; i < temp.size(); i++) {
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if (temp[i] == close)
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ans--;
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else
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ans++;
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if (ans < 0)
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break;
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}
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}
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if (!ans)
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cout << "YES\n";
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else
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cout << "NO\n";
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}
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}
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return 0;
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}

‎AGAGA XOOORRR.cpp

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// https://codeforces.com/problemset/problem/1516/B
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#include <bits/stdc++.h>
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using namespace std;
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#define fi first
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#define se second
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#define pb push_back
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#define mp make_pair
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#define all(x) x.begin(), x.end()
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#define ll long long
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#define pll pair<long, long>
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#define vll vector<long long>
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#define inf 1e18
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#define range(a,b) substr(a,b-a+1)
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#define fori(a, n) for (ll i = a; i < n; i++)
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#define forj(a, n) for (ll j = a; j < n; j++)
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#define fork(a, n) for (ll k = a; k < n; k++)
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#define print(x) for (auto i : x) {cout << i << " ";}
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#define FIO ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
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template <class T>
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bool comp(T a, T b) {
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if (a < b)
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return true;
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return false;
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}
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bool allequal(vll arr) {
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ll s = 0, i;
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for (i = 1; i < arr.size(); i++)
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if (arr[i] == arr[i - 1])
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continue;
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else
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break;
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return (i == arr.size());
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}
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int main()
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{
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FIO;
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#ifndef ONLINE_JUDGE
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//remove this piece of code when this has to be submitted in kickstart, coding ninjas
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freopen("input.txt", "r", stdin);
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freopen("output.txt", "w", stdout);
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//freopen is used to associate a file with stdin or stdout stream in C++
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#endif
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ll t;
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cin >> t;
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while (t--) {
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ll n, temp, ans;
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cin >> n;
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vll arr(n);
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fori(0, n) {
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cin >> temp;
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arr[i] = temp;
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if (i == 0)
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ans = temp;
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else
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ans = ans ^ temp;
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}
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if (ans == 0 || allequal(arr))
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cout << "YES\n";
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else {
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ll xor1 = 0, co = 0;
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fori(0, n) {
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xor1 = xor1 ^ arr[i];
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if (xor1 == ans) {
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xor1 = 0;
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co++;
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}
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}
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if (co >= 2)
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cout << "YES\n";
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else
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cout << "NO\n";
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}
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}
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return 0;
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}

‎Add Odd or Subtract Even.cpp

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// https://codeforces.com/problemset/problem/1311/A
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#include <bits/stdc++.h>
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#define fi first
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#define se second
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#define pb push_back
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#define mp make_pair
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#define ll long long
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#define pll pair<long, long>
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#define vll vector<long long>
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#define inf 1e18
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#define range(a,b) substr(a,b-a+1)
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#define FIO ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
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using namespace std;
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int main()
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{
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FIO;
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#ifndef ONLINE_JUDGE
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//remove this piece of code when this has to be submitted in kickstart
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freopen("input.txt", "r", stdin);
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freopen("output.txt", "w", stdout);
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//freopen is used to associate a file with stdin or stdout stream in C++
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#endif
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ll t;
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cin >> t;
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while (t--) {
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ll a, b;
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cin >> a >> b;
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if (a == b)
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cout << 0 << "\n";
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else if (a > b)
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if (b % 2 == 0)
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if (a % 2 == 0)
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cout << 1 << "\n";
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else
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cout << 2 << "\n";
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else
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if (a % 2 != 0)
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cout << 1 << "\n";
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else
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cout << 2 << "\n";
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else if (a < b)
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if (a % 2 == 0)
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if (b % 2 != 0)
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cout << 1 << "\n";
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else
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cout << 2 << "\n";
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else
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if (b % 2 == 0)
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cout << 1 << "\n";
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else
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cout << 2 << "\n";
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}
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return 0;
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}

‎Again Twenty Five!.cpp

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#include <iostream>
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using namespace std;
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int main()
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{
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cout << 25;
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return 0;
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}

‎Again Twenty Five!.py

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n = int(input())
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print(25)

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