func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, m, *a, *b, times, i, day;     while (cin >> n >> m) {       a = new int[m];       b = new int[m];       times = 1;       for (i = 0; i < m; i++) cin >> a[i] >> b[i];       for (i = 0; i < m - 1; i++) {         if (b[i] != a[i + 1] - 1) break;       }       if (i + 1 == m && b[i] == n)         cout <<  OK  << endl;       else {         if (a[0] != 1) {           day = 1;           times--;         } else if (b[i] == a[i + 1]) {           day = b[i];           while (b[i] == a[i + 1] && b[i] == day) {             times++;             i++;           }         } else {           day = b[i] + 1;           times--;         }         cout << day <<     << times << endl;       }       delete[] a;       delete[] b;     }     return 0;   }   