func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     int n, m;     cin >> n >> m;     int otg = 1 << 30, i;     for (i = 0; i < m; i++) {       int l, r;       cin >> l >> r;       if (r - l + 1 < otg) otg = r - l + 1;     }     cout << otg << endl;     for (i = 0; i < n; i++) cout << i % otg <<    ;     cout << endl;     return 0;   }   