Submission #857927

#	Time	Username	Problem	Language	Result	Execution time	Memory
857927		Trisanu_Das	Village (BOI20_village)	C++17	Compilation error	0 ms	0 KiB

Village

#include <bits/stdc++.h>
using namespace std;
#define int long long

int adj[11][11];

signed main(){
  int n, ans = 0; cin >> n;
  memset(adj, INT_MAX, sizeof(adj));
  for(int i = 0; i < n ; i++) adj[i][i] = 0;
  for(int x = 0; x < n - 1; x++){
    int u, v; cin >> u >> v;
    adj[u][v] = adj[v][u] = 1;
  }
  //Floyd Warshall
  for(int k = 0; k < n; k++) for(int i = 0; i < n; i++) for(int j = 0; j < n; j++) adj[i][j] = min(adj[i][j], adj[i][k] + adj[k][j]);
  vector<int> perm, mn, mx;
  int mx_val = INT_MIN, mn_val = INT_MAX;
  for(int i = 0; i < n; i++) perm.push_back(i);
  do{
    int sum = 0; bool flag = true;
    for(int i = 0; i < n; i++){
      if(perm[i] == i){
        flag = false; break;
      }
      sum += adj[i][perm[i]];
      if(!flag) continue;
      if(sum < mn_val){
        mn_val = sum; mn = perm;
      }
      if(sum > mx_val){
        mx_val = sum; mx = perm;
      }
    }
  }while(next_permutation(b));
  cout << mn_val << ' ' << mx_val << '\n';
  for(int i = 0; i < n; i++) cout << mn[i] + 1 << '\n';
  for(int j = 0; j < n; j++) cout << mx[i] + 1 << '\n';
}

Compilation message (stderr)

Village.cpp: In function 'int main()':
Village.cpp:35:27: error: 'b' was not declared in this scope
   35 |   }while(next_permutation(b));
      |                           ^
Village.cpp:38:41: error: 'i' was not declared in this scope
   38 |   for(int j = 0; j < n; j++) cout << mx[i] + 1 << '\n';
      |                                         ^
Village.cpp:8:10: warning: unused variable 'ans' [-Wunused-variable]
    8 |   int n, ans = 0; cin >> n;
      |          ^~~