func_code_string: #include <bits/stdc++.h>   using namespace std;   struct edge {     int u, v;   };   int n, m, k, f[1000000 + 1], ans[1000000 + 1], q[1000000 + 1], lq = 0, rq = -1,                                                                  cur;   edge b[1000000 + 1];   vector<int> a[1000000 + 1], e[1000000 + 1];   bool remoed[1000000 + 1], removeti[1000000 + 1];   void removequeue() {     int x, y;     while (lq <= rq) {       x = q[lq];       lq++;       cur--;       for (int i = 0; i < a[x].size(); i++) {         y = a[x][i];         if (remoed[e[x][i]] == false) {           remoed[e[x][i]] = true;           f[y]--;           if (f[y] < k && removeti[y] == false) {             rq++;             q[rq] = y;             removeti[y] = true;           }         }       }     }   }   void removemany() {     for (int i = 1; i <= n; i++) {       if (f[i] < k) {         rq++;         q[rq] = i;         removeti[i] = true;       }     }     removequeue();   }   void solve() {     removemany();     for (int i = m - 1; i >= 0; i--) {       ans[i] = cur;       if (remoed[i] == false) {         remoed[i] = true;         f[b[i].u]--;         f[b[i].v]--;         if (f[b[i].u] < k && removeti[b[i].u] == false) {           rq++;           q[rq] = b[i].u;           removeti[b[i].u] = true;         }         if (f[b[i].v] < k && removeti[b[i].v] == false) {           rq++;           q[rq] = b[i].v;           removeti[b[i].v] = true;         }       }       removequeue();     }     for (int i = 0; i < m; i++) cout << ans[i] <<   n ;   }   void readit() {     cin >> n >> m >> k;     for (int i = 0; i < m; i++) {       cin >> b[i].u >> b[i].v;       a[b[i].u].push_back(b[i].v);       a[b[i].v].push_back(b[i].u);       e[b[i].u].push_back(i);       e[b[i].v].push_back(i);       f[b[i].u]++;       f[b[i].v]++;     }     cur = n;   }   int main() {     readit();     solve();     return 0;   }   