제출 #920865

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
920865		gelastropod	Monthly railway pass (LMIO18_menesinis_bilietas)	C++14	0 / 100	794 ms	36312 KiB

menesinis_bilietas

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

signed main()
{
    int N, M, a, b, ans = 0;
    cin >> N >> M;
    char t;
    bool is1 = true, is2 = true;
    vector<vector<int>> adjlist(N, vector<int>());
    for (int i = 0; i < M; i++)
    {
        cin >> a >> b >> t;
        a--, b--;
        adjlist[a].push_back(b);
        adjlist[b].push_back(a);
        if (t == 'A') is1 = false;
        if (t == 'T') is2 = false;
    }
    queue<int> bfs;
    set<int> visited;
    bfs.push(1);
    visited.insert(1);
    while (!bfs.empty())
    {
        int i = bfs.front();
        bfs.pop();
        for (int j : adjlist[i])
            if (visited.lower_bound(j) == visited.end() || *visited.lower_bound(j) != j)
                visited.insert(j), bfs.push(j);
    }
    if (is2)
    {
        cout << (bfs.size() == N ? N : 0) << '\n';
        return 0;
    }
    else if (is1)
    {
        for (int i = 0; i < N; i++)
        {
            if ((int)adjlist[i].size() >= N - 1)
                ans++;
        }
        cout << ans << '\n';
        return 0;
    }
}

컴파일 시 표준 에러 (stderr) 메시지

menesinis_bilietas.cpp: In function 'int main()':
menesinis_bilietas.cpp:35:29: warning: comparison of integer expressions of different signedness: 'std::queue<long long int>::size_type' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   35 |         cout << (bfs.size() == N ? N : 0) << '\n';
      |                  ~~~~~~~~~~~^~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 6
• Subtask 3: 0 / 30
• Subtask 4: 0 / 35
• Subtask 5: 0 / 19