Submission #52095

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
52095	2018-06-23 20:35:28	Angelos	Travelling Merchant (APIO17_merchant)	C++17	100 / 100	404 ms	1852 KiB

merchant

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#include <iostream>
#include <cstring>
#define MAXN 103
#define MAXK 1003
const long long INF = 1e10;
using namespace std;
typedef long long ll;
int N , M , K , T[MAXN][MAXN] , B[MAXN][MAXK] , S[MAXN][MAXK];
long long profit[MAXN][MAXN] , adj[MAXN][MAXN] , adj2[MAXN][MAXN]  , dist[MAXN][MAXN];
bool check(ll x){
    for(int i=1; i<=N; i++){
        for(int j=1; j<=N; j++){
            if(i == j || dist[i][j] == INF){adj[i][j] = -INF; continue;}
            adj[i][j] = (ll)profit[i][j] - (ll)dist[i][j]*x;
            adj[i][j] = max(-INF, adj[i][j]);
        }
    }
    for(int k=1; k<=N; k++)
        for(int i=1; i<=N; i++)
            for(int j=1; j<=N; j++){
                adj[i][j] = max(adj[i][j] , adj[i][k] + adj[k][j]);
                if(adj[i][i] >= 0) return true;
                adj[i][j] = min(INF , adj[i][j]);
                adj2[i][j] = adj[i][j];
 
 
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• Subtask 1: 12 / 12
• Subtask 2: 21 / 21
• Subtask 3: 33 / 33
• Subtask 4: 34 / 34