diff --git "a/oesnuj/\352\265\254\355\230\204/20207.cpp" "b/oesnuj/\352\265\254\355\230\204/20207.cpp"
new file mode 100644
index 0000000..08b6bc3
--- /dev/null
+++ "b/oesnuj/\352\265\254\355\230\204/20207.cpp"
@@ -0,0 +1,42 @@
+#include <iostream>
+#include <vector>
+using namespace std;
+
+struct EventPeriod
+{
+    int start, end;
+};
+
+int main()
+{
+    int N;
+    cin >> N;
+    vector <EventPeriod> v(N);
+    int days[365] = {0};
+
+    for(int i = 0; i < N; i++)
+    {
+        cin >> v[i].start >> v[i].end; //일정 시작일, 종료일 입력받기
+
+        for (int k = v[i].start - 1; k < v[i].end; k++) {
+            days[k]++; //일정에 포함되는 날의 배열 값 +1;
+        }
+    }
+
+    int result = 0;
+    int height = 0, width = 0;
+    for (int i = 0; i < 365; i++) {
+        if (days[i] != 0) {
+            width++;
+            height = max(height, days[i]);
+        }
+        
+        if (days[i + 1] == 0) {
+            result += height * width;
+            width = 0;
+            height = 0;
+        }
+    }
+    cout << result;
+    return 0;
+}
\ No newline at end of file