Submission #763175

#	Time	Username	Problem	Language	Result	Execution time	Memory
763175		t6twotwo	Werewolf (IOI18_werewolf)	C++17	15 / 100	4050 ms	30308 KiB

werewolf

#include "werewolf.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> check_validity(int N, vector<int> X, vector<int> Y, vector<int> S, vector<int> E, vector<int> L, vector<int> R) {
    vector<vector<int>> adj(N);
    for (int i = 0; i < X.size(); i++) {
        adj[X[i]].push_back(Y[i]);
        adj[Y[i]].push_back(X[i]);
    }
    int Q = S.size();
    vector<int> ans(Q);
    for (int i = 0; i < Q; i++) {
        bool vis[N][2]{};
        vis[S[i]][0] = 1;
        queue<pair<int, int>> q;
        q.emplace(S[i], 0);
        while (!q.empty()) {
            auto [x, z] = q.front();
            q.pop();
            if (z == 0 && x <= R[i] && !vis[x][1]) {
                vis[x][1] = 1;
                q.emplace(x, 1);
            }
            for (int y : adj[x]) {
                if (z == 0) {
                    if (y >= L[i] && !vis[y][0]) {
                        vis[y][0] = 1;
                        q.emplace(y, 0);
                    }
                } else {
                    if (y <= R[i] && !vis[y][1]) {
                        vis[y][1] = 1;
                        q.emplace(y, 1);
                    }
                }
            }
        }
        ans[i] = vis[E[i]][1];
    }
    return ans;
}

Compilation message (stderr)

werewolf.cpp: In function 'std::vector<int> check_validity(int, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
werewolf.cpp:6:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    6 |     for (int i = 0; i < X.size(); i++) {
      |                     ~~^~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 8 / 8
• Subtask 3: 0 / 34
• Subtask 4: 0 / 51