Submission #1323915

#	Time	Username	Problem	Language	Result	Execution time	Memory
1323915		Trisanu_Das	Werewolf (IOI18_werewolf)	C++17	Compilation error	0 ms	0 KiB

werewolf

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

int const N=2e5+10;
vector<int> adj[N] = {};
bool reach[N] = {};

bool bfs(int src,int dest,int l,int r) {
    queue<pair<int,int> >Q;
    Q.push({0, src});
    reach[src] = 1;
    while (Q.size()) {
        int u, form;
        tie(form, city) = Q.front(); Q.pop();
        for (auto j : adj[u]) {
            if (u < l && j > r) continue;
            if (u > r && j < l) continue;
            if (reach[j]) continue;
            if (j > r && form == 1) continue;
            if (j < l) Q.push({1, j});
            else if (j > r) Q.push({0, j});
            else Q.push({form,j});
            reach[j] = 1;
        }
    }
    return reach[dest];
}
vector<int> check_validity(int N, vector<int> X, vector<int> Y,vector<int> S, vector<int> E,vector<int> L, vector<int> R)  {
    for (int i = 0; i < X.size(); i++) {
        adj[X[i]].push_back(Y[i]);
        adj[Y[i]].push_back(X[i]);
    }
    vector<int>ans;
    for (int i = 0; i < S.size(); i++) {
        ans.push_back(bfs(S[i], E[i], L[i], R[i]));
        for (int j = 0; j < N; j++) reach[j] = 0;
    }
    return ans;
}

Compilation message (stderr)

werewolf.cpp: In function 'bool bfs(int, int, int, int)':
werewolf.cpp:14:19: error: 'city' was not declared in this scope
   14 |         tie(form, city) = Q.front(); Q.pop();
      |                   ^~~~