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답안 #550844

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
550844 2022-04-19T10:25:15 Z Zhora_004 Graph (BOI20_graph) C++17
5 / 100
 1 ms 340 KB 
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <cmath>
#include <algorithm>
#include <vector>
#include <set>
#include <unordered_set>
#include <queue>
#include <deque>
#include <string>
#include <sstream>
#include <iomanip>
#include <map>
#include <unordered_map>
#include <stack>
#include <cstdio>
#include <climits>
#include <tuple>
#include <ctime>
#include <cstring>
#include <numeric>
#include <functional>
#include <chrono>
#include <cassert>
#include <bitset>
#include <fstream>
//#include <bit>
//#include <ranges>
//#include <numbers>
#define itn int
#define sacnf scanf
#define sz(a) ((int)((a).size()))
// printf("%.10f\n", ans);
/*ofstream fout("timeline.out");
ifstream fin("timeline.in");*/
using ll = long long;
using namespace std;
const ll mod = 1e9 + 7;
const int N = 2e5 + 1, inf = 1e9;

struct Edge {
    int v, w;
};

int n, m;
vector<bool> vis;
vector<int> comp, ans;
vector<vector<Edge>> gp;

void dfs1(int u)
{
    vis[u] = 1;
    comp.push_back(u);
    for (Edge& e : gp[u]) if (!vis[e.v]) dfs1(e.v);
}

void dfs2(int u, int val)
{
    vis[u] = 1;
    ans[u] = val;
    for (Edge& e : gp[u]) if (!vis[e.v]) dfs2(e.v, e.w - val);
}

int ok()
{
    int sum = 0;
    for (int& u : comp)
    {
        for (Edge& e : gp[u])
        {
            int v = e.v, w = e.w;
            if (!(-4 <= ans[u] && ans[u] <= 4 && -4 <= ans[v] && ans[v] <= 4 && ans[u] + ans[v] == w)) return inf;
        }
        sum += abs(ans[u]);
    }
    return sum;
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n >> m;
    vis = vector<bool>(n);
    ans = vector<int>(n);
    gp = vector<vector<Edge>>(n);
    for (int i = 0; i < m; i++)
    {
        int u, v, w;
        cin >> u >> v >> w;
        gp[--u].push_back({ --v, w * 2 });
        gp[v].push_back({ u, w * 2 });
    }
    for (int i = 0; i < n; i++)
    {
        if (!vis[i])
        {
            comp.clear();
            dfs1(i);
            int mn = inf, num = inf;
            for (int val = -4; val <= 4; val++)
            {
                for (int& u : comp) vis[u] = 0;
                dfs2(i, val);
                int sum = ok();
                if (sum < mn)
                {
                    mn = sum;
                    num = val;
                }
            }
            if (num == inf) return cout << "NO", 0;
            for (int& u : comp) vis[u] = 0;
            dfs2(i, num);
        }
    }
    cout << "YES\n";
    for (int& i : ans)
    {
        if (i == -1) cout << "-0.5";
        else
        {
            cout << i / 2;
            if (abs(i) & 1) cout << ".5";
        }
        cout << " ";
    }

    return 0;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 320 KB answer = YES
2 Correct 1 ms 212 KB answer = YES
3 Correct 1 ms 212 KB answer = YES
4 Correct 1 ms 320 KB answer = NO
5 Correct 1 ms 212 KB answer = YES
6 Correct 0 ms 320 KB answer = YES
7 Correct 0 ms 212 KB answer = YES
8 Correct 0 ms 212 KB answer = YES
9 Correct 1 ms 212 KB answer = NO
10 Correct 1 ms 212 KB answer = YES
11 Correct 1 ms 212 KB answer = YES
12 Correct 1 ms 212 KB answer = NO
13 Correct 1 ms 212 KB answer = YES
14 Correct 1 ms 212 KB answer = YES
15 Correct 1 ms 212 KB answer = YES
16 Correct 1 ms 212 KB answer = YES
17 Correct 1 ms 212 KB answer = YES
18 Correct 1 ms 320 KB answer = YES
19 Correct 1 ms 212 KB answer = YES
20 Correct 1 ms 212 KB answer = YES
21 Correct 0 ms 212 KB answer = YES
22 Correct 0 ms 212 KB answer = NO
23 Correct 0 ms 340 KB answer = NO

Subtask #2
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 320 KB answer = YES
2 Correct 1 ms 212 KB answer = YES
3 Correct 1 ms 212 KB answer = YES
4 Correct 1 ms 320 KB answer = NO
5 Correct 1 ms 212 KB answer = YES
6 Correct 0 ms 320 KB answer = YES
7 Correct 0 ms 212 KB answer = YES
8 Correct 0 ms 212 KB answer = YES
9 Correct 1 ms 212 KB answer = NO
10 Correct 1 ms 212 KB answer = YES
11 Correct 1 ms 212 KB answer = YES
12 Correct 1 ms 212 KB answer = NO
13 Correct 1 ms 212 KB answer = YES
14 Correct 1 ms 212 KB answer = YES
15 Correct 1 ms 212 KB answer = YES
16 Correct 1 ms 212 KB answer = YES
17 Correct 1 ms 212 KB answer = YES
18 Correct 1 ms 320 KB answer = YES
19 Correct 1 ms 212 KB answer = YES
20 Correct 1 ms 212 KB answer = YES
21 Correct 0 ms 212 KB answer = YES
22 Correct 0 ms 212 KB answer = NO
23 Correct 0 ms 340 KB answer = NO
24 Incorrect 1 ms 316 KB jury has the better answer: jans = YES, pans = NO
25 Halted 0 ms 0 KB -

Subtask #3
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 320 KB answer = YES
2 Correct 1 ms 212 KB answer = YES
3 Correct 1 ms 212 KB answer = YES
4 Correct 1 ms 320 KB answer = NO
5 Correct 1 ms 212 KB answer = YES
6 Correct 0 ms 320 KB answer = YES
7 Correct 0 ms 212 KB answer = YES
8 Correct 0 ms 212 KB answer = YES
9 Correct 1 ms 212 KB answer = NO
10 Correct 1 ms 212 KB answer = YES
11 Correct 1 ms 212 KB answer = YES
12 Correct 1 ms 212 KB answer = NO
13 Correct 1 ms 212 KB answer = YES
14 Correct 1 ms 212 KB answer = YES
15 Correct 1 ms 212 KB answer = YES
16 Correct 1 ms 212 KB answer = YES
17 Correct 1 ms 212 KB answer = YES
18 Correct 1 ms 320 KB answer = YES
19 Correct 1 ms 212 KB answer = YES
20 Correct 1 ms 212 KB answer = YES
21 Correct 0 ms 212 KB answer = YES
22 Correct 0 ms 212 KB answer = NO
23 Correct 0 ms 340 KB answer = NO
24 Incorrect 1 ms 316 KB jury has the better answer: jans = YES, pans = NO
25 Halted 0 ms 0 KB -

Subtask #4
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 320 KB answer = YES
2 Correct 1 ms 212 KB answer = YES
3 Correct 1 ms 212 KB answer = YES
4 Correct 1 ms 320 KB answer = NO
5 Correct 1 ms 212 KB answer = YES
6 Correct 0 ms 320 KB answer = YES
7 Correct 0 ms 212 KB answer = YES
8 Correct 0 ms 212 KB answer = YES
9 Correct 1 ms 212 KB answer = NO
10 Correct 1 ms 212 KB answer = YES
11 Correct 1 ms 212 KB answer = YES
12 Correct 1 ms 212 KB answer = NO
13 Correct 1 ms 212 KB answer = YES
14 Correct 1 ms 212 KB answer = YES
15 Correct 1 ms 212 KB answer = YES
16 Correct 1 ms 212 KB answer = YES
17 Correct 1 ms 212 KB answer = YES
18 Correct 1 ms 320 KB answer = YES
19 Correct 1 ms 212 KB answer = YES
20 Correct 1 ms 212 KB answer = YES
21 Correct 0 ms 212 KB answer = YES
22 Correct 0 ms 212 KB answer = NO
23 Correct 0 ms 340 KB answer = NO
24 Incorrect 1 ms 316 KB jury has the better answer: jans = YES, pans = NO
25 Halted 0 ms 0 KB -

Subtask #5
0 / 42.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 320 KB answer = YES
2 Correct 1 ms 212 KB answer = YES
3 Correct 1 ms 212 KB answer = YES
4 Correct 1 ms 320 KB answer = NO
5 Correct 1 ms 212 KB answer = YES
6 Correct 0 ms 320 KB answer = YES
7 Correct 0 ms 212 KB answer = YES
8 Correct 0 ms 212 KB answer = YES
9 Correct 1 ms 212 KB answer = NO
10 Correct 1 ms 212 KB answer = YES
11 Correct 1 ms 212 KB answer = YES
12 Correct 1 ms 212 KB answer = NO
13 Correct 1 ms 212 KB answer = YES
14 Correct 1 ms 212 KB answer = YES
15 Correct 1 ms 212 KB answer = YES
16 Correct 1 ms 212 KB answer = YES
17 Correct 1 ms 212 KB answer = YES
18 Correct 1 ms 320 KB answer = YES
19 Correct 1 ms 212 KB answer = YES
20 Correct 1 ms 212 KB answer = YES
21 Correct 0 ms 212 KB answer = YES
22 Correct 0 ms 212 KB answer = NO
23 Correct 0 ms 340 KB answer = NO
24 Incorrect 1 ms 316 KB jury has the better answer: jans = YES, pans = NO
25 Halted 0 ms 0 KB -