Submission #404983

#	Time	Username	Problem	Language	Result	Execution time	Memory
404983		CursedCode	Travelling Merchant (APIO17_merchant)	C++14	12 / 100	29 ms	1996 KiB

merchant

#include <bits/stdc++.h>
#define int long long
using namespace std; 
const int MAXN = 100 + 3, INF = 1000 * 1000 * 1000 + 123, MAXK = 1000 + 23;
int n, m, kk, d[MAXN][MAXN], b[MAXN][MAXK], s[MAXN][MAXK];
long double ans;
int32_t main() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr), cout.tie(nullptr);
	cin >> n >> m >> kk;
	for (int i = 0; i < n; i++) for (int j = 0; j < n; j++) if (i != j) d[i][j] = INF;
	for (int i = 0; i < n; i++) for (int j = 0; j < kk; j++) cin >> b[i][j] >> s[i][j];
	for (int i = 1; i < n; i++) for (int j = 0; j < kk; j++) if (b[i][j] != -1) return 0;
	{
		int v, w, t;
		for (int i = 0; i < m; i++) {
			cin >> v >> w >> t;
			d[--v][--w] = t;
		}
	}
	for (int k = 0; k < n; k++) for (int i = 0; i < n; i++) for (int j = 0; j < n; j++) d[i][j] = min(d[i][j], d[i][k] + d[k][j]);
	for (int i = 1; i < n; i++) for (int j = 0; j < kk; j++) if (~b[0][j] && ~s[i][j]) ans = max(ans, (long double)(s[i][j] - b[0][j]) / (d[0][i] + d[i][0]));
	cout << (int)ans;
  return 0;
}

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