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Submission #405477

# Submission time Handle Problem Language Result Execution time Memory
405477 2021-05-16T12:48:50 Z ritul_kr_singh Travelling Merchant (APIO17_merchant) C++17
100 / 100
 87 ms 4184 KB 
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define sp << ' ' <<
#define nl << '\n'

const int INF = 2e9;

signed main(){
	cin.tie(0)->sync_with_stdio(0);
	int n, m, k, u, v; cin >> n >> m >> k;
	int b[n][k], s[n][k], ok = 1;
	for(int i=0; i<n; ++i){
		for(int j=0; j<k; ++j){
			cin >> b[i][j] >> s[i][j];
			if(b[i][j] < 0) b[i][j] = INF;
			if(s[i][j] < 0) s[i][j] = -INF;
		}
	}

	int d[n][n], p[n][n];
	for(int i=0; i<n; ++i) fill(d[i], d[i]+n, INF), fill(p[i], p[i]+n, 0LL);

	while(m--) cin >> u >> v >> d[u-1][v-1];

	for(int l=0; l<n; ++l)
		for(int i=0; i<n; ++i)
			for(int j=0; j<n; ++j)
				d[i][j] = min(d[i][j], d[i][l] + d[l][j]);

	for(int i=0; i<n; ++i)
		for(int j=0; j<n; ++j)
			for(int l=0; l<k; ++l)
				p[i][j] = max(p[i][j], (b[i][l] < 0 or s[j][l] < 0) ? 0LL : s[j][l]-b[i][l]);

	int low = 0, high = 1e9;
	while(low < high){
		int x = (low + high + 1) / 2LL;

		int dp[n][n];
		for(int i=0; i<n; ++i)
			for(int j=0; j<n; ++j)
				dp[i][j] = p[i][j] - x * d[i][j];
		for(int l=0; l<n; ++l)
			for(int i=0; i<n; ++i)
				for(int j=0; j<n; ++j)
					dp[i][j] = max(dp[i][j], dp[i][l] + dp[l][j]);

		bool ok = 0;
		for(int i=0; i<n; ++i)
			if(dp[i][i] >= 0) ok = 1;

		if(ok) low = x;
		else high = x - 1;
	}

	cout << (ok ? low : 0LL);
}

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 68 ms 2020 KB Output is correct
2 Correct 35 ms 524 KB Output is correct
3 Correct 36 ms 460 KB Output is correct
4 Correct 6 ms 308 KB Output is correct
5 Correct 6 ms 332 KB Output is correct
6 Correct 5 ms 332 KB Output is correct
7 Correct 6 ms 376 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 6 ms 332 KB Output is correct
10 Correct 8 ms 384 KB Output is correct
11 Correct 6 ms 368 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 6 ms 332 KB Output is correct

Subtask #2
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 332 KB Output is correct
2 Correct 6 ms 376 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 6 ms 332 KB Output is correct
5 Correct 8 ms 384 KB Output is correct
6 Correct 6 ms 368 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 6 ms 332 KB Output is correct
9 Correct 6 ms 384 KB Output is correct
10 Correct 6 ms 332 KB Output is correct
11 Correct 6 ms 332 KB Output is correct
12 Correct 5 ms 332 KB Output is correct
13 Correct 8 ms 332 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 6 ms 316 KB Output is correct
16 Correct 6 ms 428 KB Output is correct
17 Correct 7 ms 312 KB Output is correct
18 Correct 6 ms 332 KB Output is correct
19 Correct 6 ms 464 KB Output is correct
20 Correct 7 ms 332 KB Output is correct
21 Correct 9 ms 332 KB Output is correct
22 Correct 6 ms 332 KB Output is correct
23 Correct 7 ms 452 KB Output is correct
24 Correct 6 ms 332 KB Output is correct
25 Correct 6 ms 332 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 7 ms 332 KB Output is correct
28 Correct 7 ms 332 KB Output is correct
29 Correct 6 ms 400 KB Output is correct
30 Correct 6 ms 368 KB Output is correct
31 Correct 6 ms 332 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 332 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 7 ms 332 KB Output is correct
4 Correct 7 ms 332 KB Output is correct
5 Correct 6 ms 400 KB Output is correct
6 Correct 6 ms 368 KB Output is correct
7 Correct 6 ms 332 KB Output is correct
8 Correct 48 ms 676 KB Output is correct
9 Correct 69 ms 1844 KB Output is correct
10 Correct 37 ms 588 KB Output is correct
11 Correct 43 ms 588 KB Output is correct
12 Correct 40 ms 588 KB Output is correct
13 Correct 37 ms 588 KB Output is correct

Subtask #4
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 384 KB Output is correct
2 Correct 6 ms 332 KB Output is correct
3 Correct 6 ms 332 KB Output is correct
4 Correct 5 ms 332 KB Output is correct
5 Correct 8 ms 332 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 6 ms 316 KB Output is correct
8 Correct 6 ms 428 KB Output is correct
9 Correct 7 ms 312 KB Output is correct
10 Correct 6 ms 332 KB Output is correct
11 Correct 6 ms 464 KB Output is correct
12 Correct 7 ms 332 KB Output is correct
13 Correct 9 ms 332 KB Output is correct
14 Correct 6 ms 332 KB Output is correct
15 Correct 7 ms 452 KB Output is correct
16 Correct 6 ms 332 KB Output is correct
17 Correct 48 ms 676 KB Output is correct
18 Correct 69 ms 1844 KB Output is correct
19 Correct 37 ms 588 KB Output is correct
20 Correct 43 ms 588 KB Output is correct
21 Correct 40 ms 588 KB Output is correct
22 Correct 37 ms 588 KB Output is correct
23 Correct 6 ms 332 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 7 ms 332 KB Output is correct
26 Correct 7 ms 332 KB Output is correct
27 Correct 6 ms 400 KB Output is correct
28 Correct 6 ms 368 KB Output is correct
29 Correct 6 ms 332 KB Output is correct
30 Correct 68 ms 2020 KB Output is correct
31 Correct 35 ms 524 KB Output is correct
32 Correct 36 ms 460 KB Output is correct
33 Correct 6 ms 308 KB Output is correct
34 Correct 6 ms 332 KB Output is correct
35 Correct 5 ms 332 KB Output is correct
36 Correct 6 ms 376 KB Output is correct
37 Correct 1 ms 204 KB Output is correct
38 Correct 6 ms 332 KB Output is correct
39 Correct 8 ms 384 KB Output is correct
40 Correct 6 ms 368 KB Output is correct
41 Correct 1 ms 204 KB Output is correct
42 Correct 6 ms 332 KB Output is correct
43 Correct 39 ms 580 KB Output is correct
44 Correct 50 ms 756 KB Output is correct
45 Correct 59 ms 2184 KB Output is correct
46 Correct 43 ms 752 KB Output is correct
47 Correct 39 ms 792 KB Output is correct
48 Correct 39 ms 760 KB Output is correct
49 Correct 73 ms 4036 KB Output is correct
50 Correct 1 ms 204 KB Output is correct
51 Correct 1 ms 204 KB Output is correct
52 Correct 36 ms 460 KB Output is correct
53 Correct 39 ms 588 KB Output is correct
54 Correct 37 ms 588 KB Output is correct
55 Correct 37 ms 588 KB Output is correct
56 Correct 44 ms 460 KB Output is correct
57 Correct 1 ms 316 KB Output is correct
58 Correct 7 ms 460 KB Output is correct
59 Correct 7 ms 488 KB Output is correct
60 Correct 7 ms 452 KB Output is correct
61 Correct 87 ms 4156 KB Output is correct
62 Correct 80 ms 4184 KB Output is correct
63 Correct 1 ms 308 KB Output is correct