Submission #899348

#	Time	Username	Problem	Language	Result	Execution time	Memory
899348		vjudge1	Travelling Merchant (APIO17_merchant)	C++17	12 / 100	44 ms	2388 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,1e9));
    
    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;
}

• Subtask 1: 12 / 12
• Subtask 2: 0 / 21
• Subtask 3: 0 / 33
• Subtask 4: 0 / 34