func_code_string: #include <bits/stdc++.h>   using namespace std;   long long int dir[4][2] = {{1, 0}, {-1, 0}, {0, 1}, {0, -1}};   void solve() {     int n, m;     cin >> n >> m;     int mex = INT_MAX, curr = 0;     for (int i = 0; i < m; i++) {       int l, r;       cin >> l >> r;       mex = min(mex, r - l + 1);     }     cout << mex <<   n ;     for (int i = 0; i < n; i++) {       cout << curr <<    ;       curr++;       if (curr == mex) curr = 0;     }   }   int main() {     ios_base::sync_with_stdio(false);     cout.tie(NULL);     cin.tie(NULL);     ;     long long int t = 1;     while (t--) {       solve();     }     return 0;   }   