#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
ll buy[105][1005];
ll sell[105][1005];
ll dist[1005][1005];
ll graf[1005][1005];
ll prof[1005][1005];
ld tren[1005][1005];
const ll INF = 1000000000000LL;
int n;
bool cmp(ld a, ld b){
return abs(a-b) > 0.0001;
}
bool check(ld val){
for(int i=1; i<=n; i++){
for(int j=1; j<=n; j++){
if(dist[i][j] == INF) tren[i][j] = INF;
else tren[i][j] = - prof[i][j] + (1.0*dist[i][j])*val;
//cout << i << " " << j << " " << tren[i][j] << endl;
}
}
for(int k=1; k<=n; k++){
for(int i=1; i<=n; i++){
for(int j=1; j<=n; j++){
tren[i][j] = min(tren[i][j], tren[i][k] + tren[k][j]);
}
}
}
for(int k=1; k<=n; k++){
for(int i=1; i<=n; i++){
for(int j=1; j<=n; j++){
if(tren[i][j] > tren[i][k] + tren[k][j] && cmp(tren[i][j], tren[i][k] + tren[k][j])) return 1;
}
}
}
return 0;
}
int main(){
ios_base::sync_with_stdio(false), cin.tie(0);
cout.precision(10);
cout << fixed;
int m, K;
cin >> n >> m >> K;
for(int i=1; i<=n; i++){
for(int j=1; j<=K; j++){
cin >> buy[i][j];
cin >> sell[i][j];
//buy[i][j] *= 2;
//sell[i][j] *= 2;
}
}
for(int i=1; i<=n; i++){
for(int j=1; j<=n; j++){
dist[i][j] = graf[i][j] = INF;
}
dist[i][i] = graf[i][i] = 0;
}
for(int i=1; i<=m; i++){
ll a, b, c;
cin >> a >> b >> c;
//c *= 2;
dist[a][b] = graf[a][b] = min(graf[a][b], c);
}
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++){
if(i == j) continue;
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]);
}
//cout << i << " " << j << " za " << prof[i][j] << endl;
}
}
ld res = 0, l = 1, r = 1000000000;
int tries = 80;
while(tries--){
ld mid = (l+r)/2;
if(check(mid)){
res = mid;
l = mid;
}
else r = mid;
}
res += 0.001;
ll rr = res;
cout << rr << "\n";
return 0;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
848 ms |
3576 KB |
Output is correct |
2 |
Correct |
906 ms |
2808 KB |
Output is correct |
3 |
Correct |
781 ms |
2688 KB |
Output is correct |
4 |
Correct |
106 ms |
1408 KB |
Output is correct |
5 |
Correct |
107 ms |
1408 KB |
Output is correct |
6 |
Correct |
119 ms |
1408 KB |
Output is correct |
7 |
Correct |
107 ms |
1408 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
100 ms |
1472 KB |
Output is correct |
10 |
Correct |
103 ms |
1476 KB |
Output is correct |
11 |
Correct |
108 ms |
1528 KB |
Output is correct |
12 |
Correct |
1 ms |
512 KB |
Output is correct |
13 |
Correct |
118 ms |
1508 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
117 ms |
1628 KB |
Output is correct |
2 |
Correct |
112 ms |
1528 KB |
Output is correct |
3 |
Correct |
113 ms |
1664 KB |
Output is correct |
4 |
Correct |
99 ms |
1536 KB |
Output is correct |
5 |
Correct |
115 ms |
1664 KB |
Output is correct |
6 |
Correct |
1 ms |
512 KB |
Output is correct |
7 |
Correct |
107 ms |
1536 KB |
Output is correct |
8 |
Correct |
112 ms |
1664 KB |
Output is correct |
9 |
Correct |
110 ms |
1536 KB |
Output is correct |
10 |
Correct |
106 ms |
1548 KB |
Output is correct |
11 |
Correct |
104 ms |
1784 KB |
Output is correct |
12 |
Correct |
107 ms |
1784 KB |
Output is correct |
13 |
Correct |
105 ms |
1664 KB |
Output is correct |
14 |
Correct |
110 ms |
1664 KB |
Output is correct |
15 |
Correct |
108 ms |
1792 KB |
Output is correct |
16 |
Correct |
109 ms |
1408 KB |
Output is correct |
17 |
Correct |
114 ms |
1724 KB |
Output is correct |
18 |
Correct |
1 ms |
384 KB |
Output is correct |
19 |
Correct |
104 ms |
1728 KB |
Output is correct |
20 |
Correct |
111 ms |
1664 KB |
Output is correct |
21 |
Correct |
110 ms |
1784 KB |
Output is correct |
22 |
Correct |
105 ms |
1664 KB |
Output is correct |
23 |
Correct |
104 ms |
1788 KB |
Output is correct |
24 |
Correct |
119 ms |
1408 KB |
Output is correct |
25 |
Correct |
107 ms |
1408 KB |
Output is correct |
26 |
Correct |
1 ms |
384 KB |
Output is correct |
27 |
Correct |
100 ms |
1472 KB |
Output is correct |
28 |
Correct |
103 ms |
1476 KB |
Output is correct |
29 |
Correct |
108 ms |
1528 KB |
Output is correct |
30 |
Correct |
1 ms |
512 KB |
Output is correct |
31 |
Correct |
118 ms |
1508 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
897 ms |
3448 KB |
Output is correct |
2 |
Correct |
911 ms |
4088 KB |
Output is correct |
3 |
Correct |
855 ms |
3320 KB |
Output is correct |
4 |
Correct |
850 ms |
3328 KB |
Output is correct |
5 |
Correct |
803 ms |
3356 KB |
Output is correct |
6 |
Correct |
818 ms |
3320 KB |
Output is correct |
7 |
Correct |
114 ms |
1724 KB |
Output is correct |
8 |
Correct |
1 ms |
384 KB |
Output is correct |
9 |
Correct |
104 ms |
1728 KB |
Output is correct |
10 |
Correct |
111 ms |
1664 KB |
Output is correct |
11 |
Correct |
110 ms |
1784 KB |
Output is correct |
12 |
Correct |
105 ms |
1664 KB |
Output is correct |
13 |
Correct |
104 ms |
1788 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
117 ms |
1628 KB |
Output is correct |
2 |
Correct |
112 ms |
1528 KB |
Output is correct |
3 |
Correct |
113 ms |
1664 KB |
Output is correct |
4 |
Correct |
99 ms |
1536 KB |
Output is correct |
5 |
Correct |
115 ms |
1664 KB |
Output is correct |
6 |
Correct |
1 ms |
512 KB |
Output is correct |
7 |
Correct |
107 ms |
1536 KB |
Output is correct |
8 |
Correct |
112 ms |
1664 KB |
Output is correct |
9 |
Correct |
110 ms |
1536 KB |
Output is correct |
10 |
Correct |
106 ms |
1548 KB |
Output is correct |
11 |
Correct |
104 ms |
1784 KB |
Output is correct |
12 |
Correct |
107 ms |
1784 KB |
Output is correct |
13 |
Correct |
105 ms |
1664 KB |
Output is correct |
14 |
Correct |
110 ms |
1664 KB |
Output is correct |
15 |
Correct |
108 ms |
1792 KB |
Output is correct |
16 |
Correct |
109 ms |
1408 KB |
Output is correct |
17 |
Correct |
897 ms |
3448 KB |
Output is correct |
18 |
Correct |
911 ms |
4088 KB |
Output is correct |
19 |
Correct |
855 ms |
3320 KB |
Output is correct |
20 |
Correct |
850 ms |
3328 KB |
Output is correct |
21 |
Correct |
803 ms |
3356 KB |
Output is correct |
22 |
Correct |
818 ms |
3320 KB |
Output is correct |
23 |
Correct |
114 ms |
1724 KB |
Output is correct |
24 |
Correct |
1 ms |
384 KB |
Output is correct |
25 |
Correct |
104 ms |
1728 KB |
Output is correct |
26 |
Correct |
111 ms |
1664 KB |
Output is correct |
27 |
Correct |
110 ms |
1784 KB |
Output is correct |
28 |
Correct |
105 ms |
1664 KB |
Output is correct |
29 |
Correct |
104 ms |
1788 KB |
Output is correct |
30 |
Correct |
858 ms |
2924 KB |
Output is correct |
31 |
Correct |
867 ms |
3416 KB |
Output is correct |
32 |
Correct |
833 ms |
4600 KB |
Output is correct |
33 |
Correct |
825 ms |
3448 KB |
Output is correct |
34 |
Correct |
880 ms |
3448 KB |
Output is correct |
35 |
Correct |
839 ms |
3352 KB |
Output is correct |
36 |
Correct |
906 ms |
6024 KB |
Output is correct |
37 |
Correct |
1 ms |
512 KB |
Output is correct |
38 |
Correct |
1 ms |
512 KB |
Output is correct |
39 |
Correct |
859 ms |
2808 KB |
Output is correct |
40 |
Correct |
834 ms |
2928 KB |
Output is correct |
41 |
Correct |
845 ms |
3072 KB |
Output is correct |
42 |
Correct |
824 ms |
2936 KB |
Output is correct |
43 |
Correct |
831 ms |
2812 KB |
Output is correct |
44 |
Correct |
1 ms |
512 KB |
Output is correct |
45 |
Correct |
114 ms |
1912 KB |
Output is correct |
46 |
Correct |
112 ms |
1912 KB |
Output is correct |
47 |
Correct |
109 ms |
1792 KB |
Output is correct |
48 |
Correct |
960 ms |
6288 KB |
Output is correct |
49 |
Correct |
906 ms |
6136 KB |
Output is correct |
50 |
Correct |
1 ms |
384 KB |
Output is correct |
51 |
Correct |
848 ms |
3576 KB |
Output is correct |
52 |
Correct |
906 ms |
2808 KB |
Output is correct |
53 |
Correct |
781 ms |
2688 KB |
Output is correct |
54 |
Correct |
106 ms |
1408 KB |
Output is correct |
55 |
Correct |
107 ms |
1408 KB |
Output is correct |
56 |
Correct |
119 ms |
1408 KB |
Output is correct |
57 |
Correct |
107 ms |
1408 KB |
Output is correct |
58 |
Correct |
1 ms |
384 KB |
Output is correct |
59 |
Correct |
100 ms |
1472 KB |
Output is correct |
60 |
Correct |
103 ms |
1476 KB |
Output is correct |
61 |
Correct |
108 ms |
1528 KB |
Output is correct |
62 |
Correct |
1 ms |
512 KB |
Output is correct |
63 |
Correct |
118 ms |
1508 KB |
Output is correct |