oj.uz

답안 #725132

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
725132 2023-04-17T00:29:26 Z buffering Bosses (BOI16_bosses) C++17
100 / 100
 624 ms 656 KB 
#include <bits/stdc++.h>
using namespace std;

void IO(string s = "")
{
    if (s == "")
    {
        freopen("input.txt", "r", stdin);
        freopen("output 2.txt", "w", stdout);
    }
    if (s != "")
    {
        freopen((s + ".in").c_str(), "r", stdin);
        freopen((s + ".out").c_str(), "w", stdout);
    }
}
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);

    //IO();

    int n; cin >> n;
    
    vector<vector<int>> adj(n);

    for (int i = 0; i < n; i++) {
        int m; cin >> m;
        for (int j = 0; j < m; j++) {
            int v; cin >> v;
            v--;
            adj[v].push_back(i);
        }
    }

    long long ans = 1e9;

    for (int i = 0; i < n; i++) {
        vector<int> depths(n, -1);
        queue<int> q;
        q.push(i);
        depths[i] = 0;
        while (!q.empty()) {
            int node = q.front(); q.pop();
            for (int v: adj[node]) {
                if (depths[v] == -1) {
                    depths[v] = depths[node] + 1;
                    q.push(v);
                }
            }
        }
        if (*min_element(depths.begin(), depths.end()) == 0) {
            long long curr = n;
            for (auto d: depths) curr += d;
            ans = min(ans, curr);
        }
    }

    cout << ans << endl;

}

Compilation message

bosses.cpp: In function 'void IO(std::string)':
bosses.cpp:8:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |         freopen("input.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
bosses.cpp:9:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |         freopen("output 2.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bosses.cpp:13:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |         freopen((s + ".in").c_str(), "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bosses.cpp:14:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |         freopen((s + ".out").c_str(), "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 316 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct

Subtask #2
45.0 / 45.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 316 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 316 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct

Subtask #3
33.0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 316 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 316 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 3 ms 340 KB Output is correct
14 Correct 139 ms 552 KB Output is correct
15 Correct 30 ms 468 KB Output is correct
16 Correct 502 ms 644 KB Output is correct
17 Correct 615 ms 656 KB Output is correct
18 Correct 624 ms 656 KB Output is correct