oj.uz

Submission #200591

# Submission time Handle Problem Language Result Execution time Memory
200591 2020-02-07T13:30:17 Z Rakhmand Travelling Merchant (APIO17_merchant) C++14
0 / 100
 6 ms 376 KB 
//
//  ROIGold.cpp
//  Main calisma
//
//  Created by Rakhman on 05/02/2019.
//  Copyright © 2019 Rakhman. All rights reserved.
//
#include <cstring>
#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <queue>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <cassert>
#include <iterator>

#define ios ios_base::sync_with_stdio(0), cout.tie(0), cin.tie(0);
#define S second
#define F first
#define pb push_back
#define nl '\n'
#define NL cout << '\n';
#define EX exit(0)
#define all(s) s.begin(), s.end()
#define FOR(i, start, finish, k) for(int i = start; i <= finish; i += k)

const int MXN = 1e5 + 10;
const long long MNN = 1e6 + 200;
const long long MOD = 1e9 + 7;
const long long INF = 1e18;
const int OO = 1e9 + 10;

typedef long long llong;
typedef unsigned long long ullong;

using namespace std;

void istxt(bool yes){
    if(yes == 1){
        freopen("balancing.in", "r", stdin);
        freopen("balancing.out", "w", stdout);
    }else{
        freopen("/Users/rakhmanabdirashov/Desktop/folder/Programming/Road2Master/Road2Master/input.txt", "r", stdin);
    }
}

int n, m, k;
llong b[110][1100], s[110][1100], ans[110][110], u[MXN], v[MXN], cost[MXN];
llong g[110][110];
llong mx[110][110];
//pair<llong, llong> dp[110];

bool check(int ans){
    for(int i = 1; i <= n; i++){
        for(int j = 1; j <= n; j++){
            g[i][j] = INF;
        }
    }
    for(int i = 1; i <= m; i++){
        g[u[i]][v[i]] = ans * cost[i] - mx[u[i]][v[i]];
    }
    for(int k = 1; k <= n; k++){
        for(int i = 1; i <= n; i++){
            for(int j = 1; j <= n; j++){
                g[i][j] = min(g[i][j], g[i][k] + g[k][j]);
            }
        }
    }
    for(int i = 1; i <= n; i++){
        if(g[i][i] <= 0){
            return true;
        }
    }
    return false;
}

int main () {
    ios;
    istxt(0);
    cin >> n >> m >> k;
    for(int i = 1; i <= n; i++){
        for(int j = 1; j <= k; j++){
            cin >> b[i][j] >> s[i][j];
        }
    }
    for(int i = 1; i <= m; i++){
        cin >> u[i] >> v[i] >> cost[i];
    }
    for(int i = 1; i <= n; i++){
        for(int j = 1; j <= k; j++){
            if(b[i][j] != -1){
                for(int nx = 1; nx <= n; nx++){
                    if(i == nx) continue;
                    if(s[nx][j] != -1 && g[i][nx] != OO){
                        //cout << i << ' ' << nx << ' ' << j << nl;
                        //cout << (s[nx][j] - b[i][j]) / g[i][nx] << ' '<< b[i][j] << ' ' << s[nx][j] << ' ' << g[i][nx]<< nl;
                        mx[i][nx] = max(mx[i][nx], s[nx][j] - b[i][j]);
                    }
                }
            }
        }
    }
    llong l = 0, r = 1e9;
    while(r - l > 1){
        llong  m = (r + l) / 2;
        if(check(m)){
            l = m;
        }else{
            r = m;
        }
    }
    cout << (check(r) ? r : l);
}

Compilation message

merchant.cpp: In function 'void istxt(bool)':
merchant.cpp:54:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen("balancing.in", "r", stdin);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
merchant.cpp:55:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen("balancing.out", "w", stdout);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
merchant.cpp:57:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         freopen("/Users/rakhmanabdirashov/Desktop/folder/Programming/Road2Master/Road2Master/input.txt", "r", stdin);
         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 34.0

# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -