oj.uz

Submission #52090

# Submission time Handle Problem Language Result Execution time Memory
52090 2018-06-23T20:29:25 Z Angelos Travelling Merchant (APIO17_merchant) C++14
21 / 100
 236 ms 1164 KB 
#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] ;
long long profit[MAXN][MAXN] , adj[MAXN][MAXN] , adj2[MAXN][MAXN] , B[MAXN][MAXN] , S[MAXN][MAXN] , dist[MAXN][MAXN];

bool check(int 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];
            }


    /*cout << endl;

    for(int i=1; i<=N; i++){
        for(int j=1; j<=N; j++)
            cout << adj[i][j] << " " ;
        cout << endl;
    }

    cout << endl;*/

    for(int k=1; k<=N; k++)
        for(int i=1; i<=N; i++)
            for(int j=1; j<=N; j++){
                adj2[i][j] = max(adj2[i][j] , adj2[i][k] + adj2[k][j]);
                if(adj2[i][j] > adj[i][j]) return true;
            }

    return false;
}

int main(){
    cin >> N >> M >> K;


    for(int i=1; i<=N; i++)
        for(int k=0; k<K; k++)  cin >> B[i][k] >> S[i][k];


    for(int i=0; i<=N; i++)
        for(int j=0; j<=N; j++) dist[i][j] = INF;

    for(int i=1; i<=N; i++)    dist[i][i] = 0;

    for(int i=0; i<M; i++){
        int u,v; cin >> u >> v;

        cin >> dist[u][v];
    }



    for(int k=1; k<=N; k++)
        for(int i=1; i<=N; i++)
            for(int j=1; j<=N; j++)
                    dist[i][j] = min(dist[i][j] , dist[i][k] + dist[k][j]);


    for(int i=1; i<=N; i++)
        for(int j=1; j<=N; j++){
            profit[i][j] = 0;
            for(int k=0; k<K; k++){
                if(B[i][k] == -1 || S[j][k] == -1) continue;
                profit[i][j] = max(profit[i][j] , S[j][k] - B[i][k]);
            }
        }


    /*for(int i=1; i<=N; i++){
        for(int j=1; j<=N; j++)
            cout << dist[i][j] << " " ;
        cout << endl;
    }*/

    long long low = 1 , high = 1e9 + 1 , ANS = 0;


    while(low <= high){
        ll mid = (low + high)/2;

        //cout << low << " " << mid << " " << high << endl;

        if(check(mid)) {ANS = max(ANS , mid); low = mid + 1;}
        else    high = mid - 1;
    }

    cout << ANS << endl;



    return 0;
}

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 236 ms 888 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 888 KB Output is correct
2 Correct 18 ms 888 KB Output is correct
3 Correct 21 ms 888 KB Output is correct
4 Correct 18 ms 888 KB Output is correct
5 Correct 21 ms 888 KB Output is correct
6 Correct 2 ms 888 KB Output is correct
7 Correct 18 ms 892 KB Output is correct
8 Correct 22 ms 892 KB Output is correct
9 Correct 19 ms 892 KB Output is correct
10 Correct 17 ms 892 KB Output is correct
11 Correct 19 ms 892 KB Output is correct
12 Correct 16 ms 892 KB Output is correct
13 Correct 14 ms 892 KB Output is correct
14 Correct 16 ms 892 KB Output is correct
15 Correct 16 ms 892 KB Output is correct
16 Correct 15 ms 892 KB Output is correct
17 Correct 18 ms 892 KB Output is correct
18 Correct 2 ms 892 KB Output is correct
19 Correct 15 ms 892 KB Output is correct
20 Correct 14 ms 892 KB Output is correct
21 Correct 18 ms 892 KB Output is correct
22 Correct 14 ms 892 KB Output is correct
23 Correct 12 ms 892 KB Output is correct
24 Correct 22 ms 892 KB Output is correct
25 Correct 14 ms 892 KB Output is correct
26 Correct 2 ms 892 KB Output is correct
27 Correct 13 ms 892 KB Output is correct
28 Correct 14 ms 892 KB Output is correct
29 Correct 12 ms 892 KB Output is correct
30 Correct 2 ms 892 KB Output is correct
31 Correct 19 ms 892 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 108 ms 1072 KB Output is correct
2 Incorrect 220 ms 1164 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 888 KB Output is correct
2 Correct 18 ms 888 KB Output is correct
3 Correct 21 ms 888 KB Output is correct
4 Correct 18 ms 888 KB Output is correct
5 Correct 21 ms 888 KB Output is correct
6 Correct 2 ms 888 KB Output is correct
7 Correct 18 ms 892 KB Output is correct
8 Correct 22 ms 892 KB Output is correct
9 Correct 19 ms 892 KB Output is correct
10 Correct 17 ms 892 KB Output is correct
11 Correct 19 ms 892 KB Output is correct
12 Correct 16 ms 892 KB Output is correct
13 Correct 14 ms 892 KB Output is correct
14 Correct 16 ms 892 KB Output is correct
15 Correct 16 ms 892 KB Output is correct
16 Correct 15 ms 892 KB Output is correct
17 Correct 108 ms 1072 KB Output is correct
18 Incorrect 220 ms 1164 KB Output isn't correct
19 Halted 0 ms 0 KB -