func_code_string: #include <bits/stdc++.h>   using namespace std;   const int limit = 453;   int n, m, q, i, x, y, col;   vector<pair<int, int> > edges[100011];   pair<int, int> Q[100011];   vector<int> cols[100011];   int sz[100011];   int id_big[100011], cnt_big;   int dad[100011];   vector<int> who[100011];   int big[limit + 11][100011];   bool us[100011];   vector<int> appear[100011];   int groups;   int Find(int x) {     if (dad[x] == x) return x;     dad[x] = Find(dad[x]);     return dad[x];   }   bool Merge(int x, int y) {     x = Find(x);     y = Find(y);     if (x == y) return false;     dad[x] = y;     return true;   }   void pre() {     int i;     for (i = 1; i <= n; i++) {       dad[i] = i;       sort(cols[i].begin(), cols[i].end());       cols[i].resize(unique(cols[i].begin(), cols[i].end()) - cols[i].begin());       sz[i] = cols[i].size();       if (sz[i] >= limit) id_big[i] = ++cnt_big;     }   }   void solve_color(int id) {     for (auto e : edges[id]) Merge(e.first, e.second);     for (auto e : edges[id]) {       if (!us[e.first]) who[Find(e.first)].push_back(e.first);       if (!us[e.second]) who[Find(e.second)].push_back(e.second);       us[e.first] = us[e.second] = true;     }     for (auto e : edges[id]) {       int node = e.first;       if (who[e.second].size() > 0) node = e.second;       if (who[node].size() > 0) {         groups++;         for (auto n1 : who[node]) {           appear[n1].push_back(groups);           if (sz[n1] < limit) continue;           for (auto n2 : who[node]) big[id_big[n1]][n2]++;         }         who[node].clear();       }     }     for (auto e : edges[id])       dad[e.first] = e.first, dad[e.second] = e.second,       us[e.first] = us[e.second] = false;   }   int main() {     scanf( %d%d , &n, &m);     for (i = 1; i <= m; i++) {       scanf( %d%d%d , &x, &y, &col);       edges[col].push_back(make_pair(x, y));       cols[x].push_back(col);       cols[y].push_back(col);     }     pre();     scanf( %d , &q);     for (i = 1; i <= q; i++) {       scanf( %d%d , &x, &y);       Q[i] = make_pair(x, y);     }     for (i = 1; i <= m; i++) {       if (edges[i].empty()) continue;       solve_color(i);     }     for (i = 1; i <= q; i++) {       if (sz[Q[i].first] > sz[Q[i].second]) swap(Q[i].first, Q[i].second);       if (sz[Q[i].second] < limit) {         int c0 = 0;         int c1 = 0;         int n1 = Q[i].first;         int n2 = Q[i].second;         int ans = 0;         while (c0 < appear[n1].size() && c1 < appear[n2].size()) {           if (appear[n1][c0] == appear[n2][c1]) {             ans++;             c0++;             c1++;             continue;           }           if (appear[n1][c0] < appear[n2][c1])             c0++;           else             c1++;         }         printf( %d n , ans);         continue;       }       printf( %d n , big[id_big[Q[i].second]][Q[i].first]);     }     return 0;   }   