Submission #583850

#	Time	Username	Problem	Language	Result	Execution time	Memory
583850		drdilyor	Travelling Merchant (APIO17_merchant)	C++17	12 / 100	25 ms	1108 KiB

merchant

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/detail/standard_policies.hpp>
#ifdef ONPC
    #include "t_debug.cpp"
#else
    #define debug(...) 42
#endif
#define allit(a) (a).begin(), (a).end()
#define sz(a) ((int) (a).size())
#define cut(s) {cout << s << '\n'; return 0;}

using namespace std;
using ll = long long;
using vi = vector<int>;
namespace pd = __gnu_pbds;
template<typename K> using ordered_set = pd::tree<K, pd::null_type, less<K>, pd::rb_tree_tag, pd::tree_order_statistics_node_update>;
template<typename... T> using hash_table = pd::gp_hash_table<T...>;

const int INF = 1e9;
const ll INFL = 1e18;
const int N = 1e5;
const int RANDOM = chrono::high_resolution_clock::now().time_since_epoch().count();
mt19937 rng(RANDOM);

int solve() {
    int n, m, k;
    cin >> n >> m >> k;
    int buy[n][k];
    int sell[n][k];
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < k; j++) {
            cin >> buy[i][j];
            cin >> sell[i][j];
        }
    }

    int adj[n][n];
    int dist[n][n];
    memset(adj, 0, sizeof(adj));
    memset(dist, 0x3d, sizeof(dist));
    for (int i = 0; i < m; i++) {
        int u, v, w;
        cin >> u >> v >> w;
        adj[u-1][v-1] = w;
        dist[u-1][v-1] = w;
    }
    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 res = 0;
    for (int j = 1; j < n; j++) {
        debug(dist[0][j], dist[j][0]);
        if (dist[0][j] + dist[j][0] > INF) continue;
        int mxDiff = 0;
        for (int item = 0; item < k; item++) {
            mxDiff = max(mxDiff, sell[j][item] - buy[0][item]);
        }
        int efficiency = mxDiff / (dist[0][j]+dist[j][0]);
        debug(j, mxDiff, efficiency);
        res = max(res, efficiency);
    }
    cout << res << '\n';
    return 0;
}

signed main() {
    cin.tie(0)->sync_with_stdio(0);
    int t = 1;
    //cin >> t;
    while (t-- && cin) {
        if (solve()) break;
        #ifdef ONPC
            cout << "____________________" << endl;
        #endif
    }
    return 0;
}

Compilation message (stderr)

merchant.cpp: In function 'int solve()':
merchant.cpp:7:24: warning: statement has no effect [-Wunused-value]
    7 |     #define debug(...) 42
      |                        ^~
merchant.cpp:55:9: note: in expansion of macro 'debug'
   55 |         debug(dist[0][j], dist[j][0]);
      |         ^~~~~
merchant.cpp:7:24: warning: statement has no effect [-Wunused-value]
    7 |     #define debug(...) 42
      |                        ^~
merchant.cpp:62:9: note: in expansion of macro 'debug'
   62 |         debug(j, mxDiff, efficiency);
      |         ^~~~~

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