func_code_string: #include <bits/stdc++.h>   using namespace std;   int winner[300005];   int ans[300005];   int range[300005];   int find_winner(int v) {     if (v == winner[v]) return v;     return winner[v] = find_winner(winner[v]);   }   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     int n, m;     cin >> n >> m;     for (int i = 1; i <= n; i++) {       winner[i] = i;       range[i] = i;       ans[i] = i;     }     while (m--) {       int l, r, x;       cin >> l >> r >> x;       int i = 0;       for (i = l; i <= r; i++) {         int w = find_winner(i);         ans[w] = x;         winner[w] = x;         i = range[w];       }       range[x] = i - 1;     }     for (int i = 1; i <= n; i++) {       if (i == ans[i])         cout <<  0  ;       else         cout << ans[i] <<    ;     }     return 0;   }   