답안 #843856

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
843856	2023-09-04T16:03:24 Z	nonono	봉쇄 시간 (IOI23_closing)	C++17	컴파일 오류	0 ms	0 KB

closing

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

const int mxN = 200000;

vector<vector<pair<int, int>>> adj(mxN);
long long d[2][mxN];

void dfs(int u, int par, int type) {
    for(auto [v, w] : adj[u]) {
        if(v == par) continue ;
        
        d[type][v] = d[type][u] + w;
        dfs(v, u);
    }
}

int sub1(int N, long long K) {
    vector<long long> a;
    
    for(int i = 0; i < N; i ++) {
        a.push_back(d[0][i]);
        a.push_back(d[1][i]);
    }
    
    sort(a.begin(), a.end());
    
    long long sum = 0;
    int ans = 0;
    
    for(long long x : a) {
        if(sum + x > K) break ;
        sum += x;
        ans += 1;
    }
    
    return ans;
}

int max_score(int N, int X, int Y, long long K, vector<int> U, vector<int> V, vector<int> W) {
    
    for(int i = 0; i < N - 1; i ++) {
        adj[U[i]].push_back({V[i], W[i]});
        adj[V[i]].push_back({U[i], W[i]});
    }
    
    dfs(X, X, 0);
    dfs(Y, Y, 1);
    
    if(d[0][Y] > 2 * K) return sub1(N, K);
}

// int main() {
//     int N, X, Y;
//     long long K;
//     cin >> N >> X >> Y >> K;
    
//     vector<int> U(N), V(N), W(N);
    
//     for(int i = 0; i < N - 1; i ++) {
//         cin >> U[i] >> V[i] >> W[i];
//     }
    
//     cout << max_score(N, X, Y, K, U, V, W) << "\n";
//     return 0;
// }

Compilation message

closing.cpp: In function 'void dfs(int, int, int)':
closing.cpp:15:17: error: too few arguments to function 'void dfs(int, int, int)'
   15 |         dfs(v, u);
      |                 ^
closing.cpp:10:6: note: declared here
   10 | void dfs(int u, int par, int type) {
      |      ^~~
closing.cpp: In function 'int max_score(int, int, int, long long int, std::vector<int>, std::vector<int>, std::vector<int>)':
closing.cpp:52:1: warning: control reaches end of non-void function [-Wreturn-type]
   52 | }
      | ^