제출 #871018

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
871018		Ahmed57	Paths (RMI21_paths)	C++17	8 / 100	2 ms	600 KiB

Main

#include <bits/stdc++.h>
using namespace std;
vector<pair<int,long long>> adj[101],tree[101];
long long ma = -1 , nod = 0;
void dfs(int i,int pr,long long co){
    if(ma<co){
        ma = co;
        nod = i;
    }
    for(auto j:tree[i]){
        if(j.first==pr)continue;
        dfs(j.first,i,co+j.second);
    }
}
long long all = 0;
bool clea(int i,int pr){
    if(i==nod)return 1;
    for(int j = 0;j<tree[i].size();j++){
        if(tree[i][j].first==pr)continue;
        all+=tree[i][j].second;
        long long xd = tree[i][j].second;
        tree[i][j].second = 0;
        bool de = clea(tree[i][j].first,i);
        if(de==0){
            all-=xd;
            tree[i][j].second = xd;
        }else{
            return 1;
        }
    }
    return 0;
}
signed main(){
    ios_base::sync_with_stdio(false);cin.tie(0);
    int n,k;
    cin>>n>>k;
    for(int i = 0;i<n-1;i++){
        int a,b,c;cin>>a>>b>>c;
        adj[a].push_back({b,c});
        adj[b].push_back({a,c});
    }
    for(int r = 1;r<=n;r++){
        for(int i = 1;i<=n;i++){
            tree[i].clear();
            for(auto w:adj[i]){
                tree[i].push_back(w);
            }
        }
        int e = k;
        all = 0;
        while(e--){
            ma = -1 , nod = 0;
            dfs(r,0,0);
            clea(r,0);
        }
        cout<<all<<endl;
    }
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'bool clea(int, int)':
Main.cpp:18:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |     for(int j = 0;j<tree[i].size();j++){
      |                   ~^~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 0 / 11
• Subtask 3: 0 / 17
• Subtask 4: 0 / 20
• Subtask 5: 0 / 12
• Subtask 6: 0 / 32