제출 #869845

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
869845		gutzzy	여행하는 상인 (APIO17_merchant)	C++14	0 / 100	42 ms	1236 KiB

merchant

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

vector<vector<pair<int,int>>> items;
vector<vector<int>> dist;
int n;

void fw(){
    for(int k=0;k<n;k++){
        for(int i=0;i<n;i++){
            for(int j=0;j<n;j++){
                dist[i][j]=min(dist[i][j],dist[i][k]+dist[k][j]);
            }
        }
    }
}

int main(){
    int m,k,v,w,t;
    cin >> n >> m >> k;
    // items --> vector[market][item][0-->buy / 1-->sell]
    items = vector<vector<pair<int,int>>>(n,vector<pair<int,int>>(k));
    dist = vector<vector<int>>(n,vector<int>(n,1e18));
    
    for(int i=0;i<n;i++) dist[i][i]=0;
    
    for(int i=0;i<n;i++){
        for(int j=0;j<k;j++){
            cin >> items[i][j].first >> items[i][j].second;
        }
    }
    for(int i=0;i<m;i++){
        cin >> v >> w >> t;
        dist[v-1][w-1]=min(dist[v-1][w-1],t);
    }
    
    // busco cíclos

    fw();
    
    int res = 0;
    for(int j=0;j<k;j++){
        if(items[0][j].first==-1) continue;
        for(int i=1;i<n;i++){
            if(items[i][j].second==-1) continue;
            res = max(res, (items[i][j].second-items[0][j].first)/(dist[0][i]+dist[i][0]));
        }
    }
    cout << res << endl;
}

컴파일 시 표준 에러 (stderr) 메시지

merchant.cpp: In function 'int main()':
merchant.cpp:23:48: warning: overflow in conversion from 'double' to 'std::vector<int>::value_type' {aka 'int'} changes value from '1.0e+18' to '2147483647' [-Woverflow]
   23 |     dist = vector<vector<int>>(n,vector<int>(n,1e18));
      |                                                ^~~~

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