func_code_string: #include <bits/stdc++.h>   using namespace std;   const int inf = 1e9 + 7;   struct node {     int x, d;   };   vector<int> adj[100005];   vector<int> good[105];   int vis[100005];   int a[100005];   int d[100005][105];   void bfs(int s) {     queue<node> q;     for (int i = 0; i < good[s].size(); i++) {       int v = good[s][i];       node tmp;       tmp.x = v;       tmp.d = 0;       q.push(tmp);     }     while (!q.empty()) {       node t = q.front();       q.pop();       d[t.x][s] = min(d[t.x][s], t.d);       for (int i = 0; i < adj[t.x].size(); i++) {         int v = adj[t.x][i];         if (vis[v] == 0) {           vis[v] = 1;           node tmp;           tmp.x = v;           tmp.d = t.d + 1;           q.push(tmp);         }       }     }   }   int main() {     int n, m, k, s, u, v;     scanf( %d%d%d%d , &n, &m, &k, &s);     for (int i = 1; i <= n; i++) {       scanf( %d , &a[i]);       good[a[i]].push_back(i);     }     for (int i = 0; i < m; i++) {       scanf( %d%d , &u, &v);       adj[u].push_back(v);       adj[v].push_back(u);     }     fill(d[0], d[0] + 105 * 100005, inf);     for (int i = 1; i <= k; i++) {       memset(vis, 0, sizeof(vis));       bfs(i);     }     for (int i = 1; i <= n; i++) {       sort(d[i] + 1, d[i] + 1 + k);       long long sum = 0;       for (int j = 1; j <= s; j++) sum += d[i][j];       printf( %lld  , sum);     }     return 0;   }   