#include <bits/stdc++.h>
using namespace std;
void just_do_it();
int main() {
#ifdef KAMIRULEZ
freopen("kamirulez.inp", "r", stdin);
freopen("kamirulez.out", "w", stdout);
#endif
ios_base::sync_with_stdio(0);
cin.tie(0);
just_do_it();
return 0;
}
const int maxN = 1e2 + 20;
const int maxK = 1e3 + 20;
const int inf1 = 1e9 + 20;
const long long inf2 = 1e18L + 20;
int buy[maxN][maxK];
int sell[maxN][maxK];
int dist[maxN][maxN];
int prof[maxN][maxN];
long long cost[maxN][maxN];
long long dist2[maxN];
int flag[maxN];
int N, M, K;
bool dfs(int u) {
flag[u] = 0;
for (int v = 1; v <= N; v++) {
if (v != u && dist2[u] + cost[u][v] == dist2[v]) {
if (flag[v] == 0 || (flag[v] == -1 && dfs(v))) {
return true;
}
}
}
flag[u] = 1;
return false;
}
bool check() {
for (int i = 1; i <= N; i++) {
dist2[i] = 0;
}
for (int iter = 0; iter < N; iter++) {
for (int i = 1; i <= N; i++) {
for (int j = 1; j <= N; j++) {
if (dist2[j] < dist2[i] + cost[i][j]) {
if (iter == N - 1) {
return true;
}
dist2[j] = dist2[i] + cost[i][j];
}
}
}
}
for (int i = 1; i <= N; i++) {
flag[i] = -1;
}
for (int i = 1; i <= N; i++) {
if (flag[i] == -1 && dfs(i)) {
return true;
}
}
return false;
}
void just_do_it() {
cin >> N >> M >> K;
for (int i = 1; i <= N; i++) {
for (int j = 1; j <= N; j++) {
if (i == j) {
dist[i][j] = 0;
}
else {
dist[i][j] = inf1;
}
}
}
for (int i = 1; i <= N; i++) {
for (int j = 1; j <= K; j++) {
cin >> buy[i][j] >> sell[i][j];
}
}
for (int i = 1; i <= M; i++) {
int u, v, w;
cin >> u >> v >> w;
dist[u][v] = min(dist[u][v], w);
}
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++) {
prof[i][j] = 0;
for (int k = 1; k <= K; k++) {
if (buy[i][k] != -1 && sell[j][k] != -1) {
prof[i][j] = max(prof[i][j], sell[j][k] - buy[i][k]);
}
}
}
}
int res = 0;
int lt = 1;
int rt = inf1;
while (lt <= rt) {
int mt = (lt + rt) / 2;
for (int i = 1; i <= N; i++) {
for (int j = 1; j <= N; j++) {
if (dist[i][j] == inf1) {
cost[i][j] = -inf2;
}
else {
cost[i][j] = 1LL * prof[i][j] - 1LL * dist[i][j] * mt;
}
}
}
if (check()) {
res = mt;
lt = mt + 1;
}
else {
rt = mt - 1;
}
}
cout << res;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
48 ms |
1280 KB |
Output is correct |
2 |
Correct |
28 ms |
1324 KB |
Output is correct |
3 |
Correct |
30 ms |
1236 KB |
Output is correct |
4 |
Correct |
5 ms |
824 KB |
Output is correct |
5 |
Correct |
5 ms |
724 KB |
Output is correct |
6 |
Correct |
5 ms |
724 KB |
Output is correct |
7 |
Correct |
6 ms |
724 KB |
Output is correct |
8 |
Correct |
0 ms |
340 KB |
Output is correct |
9 |
Correct |
5 ms |
724 KB |
Output is correct |
10 |
Correct |
5 ms |
840 KB |
Output is correct |
11 |
Correct |
9 ms |
724 KB |
Output is correct |
12 |
Correct |
1 ms |
328 KB |
Output is correct |
13 |
Correct |
5 ms |
852 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
724 KB |
Output is correct |
2 |
Correct |
6 ms |
724 KB |
Output is correct |
3 |
Correct |
0 ms |
340 KB |
Output is correct |
4 |
Correct |
5 ms |
724 KB |
Output is correct |
5 |
Correct |
5 ms |
840 KB |
Output is correct |
6 |
Correct |
9 ms |
724 KB |
Output is correct |
7 |
Correct |
1 ms |
328 KB |
Output is correct |
8 |
Correct |
5 ms |
852 KB |
Output is correct |
9 |
Correct |
5 ms |
724 KB |
Output is correct |
10 |
Correct |
6 ms |
724 KB |
Output is correct |
11 |
Correct |
6 ms |
724 KB |
Output is correct |
12 |
Correct |
6 ms |
816 KB |
Output is correct |
13 |
Correct |
7 ms |
852 KB |
Output is correct |
14 |
Correct |
1 ms |
340 KB |
Output is correct |
15 |
Correct |
5 ms |
724 KB |
Output is correct |
16 |
Correct |
5 ms |
852 KB |
Output is correct |
17 |
Correct |
5 ms |
716 KB |
Output is correct |
18 |
Correct |
7 ms |
724 KB |
Output is correct |
19 |
Correct |
7 ms |
852 KB |
Output is correct |
20 |
Correct |
6 ms |
884 KB |
Output is correct |
21 |
Correct |
5 ms |
852 KB |
Output is correct |
22 |
Correct |
6 ms |
852 KB |
Output is correct |
23 |
Correct |
6 ms |
852 KB |
Output is correct |
24 |
Correct |
6 ms |
724 KB |
Output is correct |
25 |
Correct |
5 ms |
724 KB |
Output is correct |
26 |
Correct |
1 ms |
340 KB |
Output is correct |
27 |
Correct |
6 ms |
888 KB |
Output is correct |
28 |
Correct |
7 ms |
852 KB |
Output is correct |
29 |
Correct |
5 ms |
852 KB |
Output is correct |
30 |
Correct |
7 ms |
852 KB |
Output is correct |
31 |
Correct |
5 ms |
708 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
724 KB |
Output is correct |
2 |
Correct |
1 ms |
340 KB |
Output is correct |
3 |
Correct |
6 ms |
888 KB |
Output is correct |
4 |
Correct |
7 ms |
852 KB |
Output is correct |
5 |
Correct |
5 ms |
852 KB |
Output is correct |
6 |
Correct |
7 ms |
852 KB |
Output is correct |
7 |
Correct |
5 ms |
708 KB |
Output is correct |
8 |
Correct |
36 ms |
1236 KB |
Output is correct |
9 |
Correct |
94 ms |
1304 KB |
Output is correct |
10 |
Correct |
34 ms |
1216 KB |
Output is correct |
11 |
Correct |
36 ms |
1228 KB |
Output is correct |
12 |
Correct |
49 ms |
1236 KB |
Output is correct |
13 |
Correct |
31 ms |
1236 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
5 ms |
724 KB |
Output is correct |
2 |
Correct |
6 ms |
724 KB |
Output is correct |
3 |
Correct |
6 ms |
724 KB |
Output is correct |
4 |
Correct |
6 ms |
816 KB |
Output is correct |
5 |
Correct |
7 ms |
852 KB |
Output is correct |
6 |
Correct |
1 ms |
340 KB |
Output is correct |
7 |
Correct |
5 ms |
724 KB |
Output is correct |
8 |
Correct |
5 ms |
852 KB |
Output is correct |
9 |
Correct |
5 ms |
716 KB |
Output is correct |
10 |
Correct |
7 ms |
724 KB |
Output is correct |
11 |
Correct |
7 ms |
852 KB |
Output is correct |
12 |
Correct |
6 ms |
884 KB |
Output is correct |
13 |
Correct |
5 ms |
852 KB |
Output is correct |
14 |
Correct |
6 ms |
852 KB |
Output is correct |
15 |
Correct |
6 ms |
852 KB |
Output is correct |
16 |
Correct |
6 ms |
724 KB |
Output is correct |
17 |
Correct |
36 ms |
1236 KB |
Output is correct |
18 |
Correct |
94 ms |
1304 KB |
Output is correct |
19 |
Correct |
34 ms |
1216 KB |
Output is correct |
20 |
Correct |
36 ms |
1228 KB |
Output is correct |
21 |
Correct |
49 ms |
1236 KB |
Output is correct |
22 |
Correct |
31 ms |
1236 KB |
Output is correct |
23 |
Correct |
5 ms |
724 KB |
Output is correct |
24 |
Correct |
1 ms |
340 KB |
Output is correct |
25 |
Correct |
6 ms |
888 KB |
Output is correct |
26 |
Correct |
7 ms |
852 KB |
Output is correct |
27 |
Correct |
5 ms |
852 KB |
Output is correct |
28 |
Correct |
7 ms |
852 KB |
Output is correct |
29 |
Correct |
5 ms |
708 KB |
Output is correct |
30 |
Correct |
48 ms |
1280 KB |
Output is correct |
31 |
Correct |
28 ms |
1324 KB |
Output is correct |
32 |
Correct |
30 ms |
1236 KB |
Output is correct |
33 |
Correct |
5 ms |
824 KB |
Output is correct |
34 |
Correct |
5 ms |
724 KB |
Output is correct |
35 |
Correct |
5 ms |
724 KB |
Output is correct |
36 |
Correct |
6 ms |
724 KB |
Output is correct |
37 |
Correct |
0 ms |
340 KB |
Output is correct |
38 |
Correct |
5 ms |
724 KB |
Output is correct |
39 |
Correct |
5 ms |
840 KB |
Output is correct |
40 |
Correct |
9 ms |
724 KB |
Output is correct |
41 |
Correct |
1 ms |
328 KB |
Output is correct |
42 |
Correct |
5 ms |
852 KB |
Output is correct |
43 |
Correct |
30 ms |
1320 KB |
Output is correct |
44 |
Correct |
33 ms |
1364 KB |
Output is correct |
45 |
Correct |
44 ms |
1800 KB |
Output is correct |
46 |
Correct |
40 ms |
1364 KB |
Output is correct |
47 |
Correct |
34 ms |
1388 KB |
Output is correct |
48 |
Correct |
47 ms |
1376 KB |
Output is correct |
49 |
Correct |
88 ms |
3264 KB |
Output is correct |
50 |
Correct |
1 ms |
340 KB |
Output is correct |
51 |
Correct |
1 ms |
340 KB |
Output is correct |
52 |
Correct |
31 ms |
1236 KB |
Output is correct |
53 |
Correct |
30 ms |
1448 KB |
Output is correct |
54 |
Correct |
30 ms |
1340 KB |
Output is correct |
55 |
Correct |
28 ms |
1240 KB |
Output is correct |
56 |
Correct |
28 ms |
1236 KB |
Output is correct |
57 |
Correct |
1 ms |
340 KB |
Output is correct |
58 |
Correct |
8 ms |
852 KB |
Output is correct |
59 |
Correct |
7 ms |
932 KB |
Output is correct |
60 |
Correct |
6 ms |
852 KB |
Output is correct |
61 |
Correct |
80 ms |
3296 KB |
Output is correct |
62 |
Correct |
86 ms |
3404 KB |
Output is correct |
63 |
Correct |
0 ms |
340 KB |
Output is correct |