#include "bits/stdc++.h"
using namespace std;
#ifdef Nero
#include "Deb.h"
#else
#define debug(...)
#endif
const int N = 2050;
const long long INF = 1e15;
int a[N][N];
long long dp[N][N];
long long ndp[N][N];
long long dp2[N][N];
void solve(int l, int r) {
if (l + 1 == r) {
dp[l][r] = dp[r][l] = a[l][r];
return;
}
int mid = (l + r) / 2;
solve(l, mid);
solve(mid + 1, r);
for (int i = l; i <= r; ++i) {
for (int j = l; j <= r; ++j) {
ndp[i][j] = ndp[j][i] = INF;
dp2[i][j] = dp2[j][i] = INF;
}
}
for (int i = l; i <= mid; ++i) {
for (int j = mid + 1; j <= r; ++j) {
for (int k = l; k <= mid; ++k) {
if (k == i) continue;
dp2[i][j] = min(dp2[i][j], dp[i][k] + a[j][k]);
}
for (int k = mid + 1; k <= r; ++k) {
if (k == j) continue;
ndp[i][k] = min(ndp[i][k], dp2[i][j] + dp[j][k]);
}
}
}
for (int i = l; i <= mid; ++i) {
for (int j = mid + 1; j <= r; ++j) {
dp[i][j] = dp[j][i] = ndp[i][j];
}
}
for (int i = l; i <= mid; ++i) {
for (int j = l; j <= mid; ++j) {
dp[i][j] = INF;
}
}
for (int i = mid + 1; i <= r; ++i) {
for (int j = mid + 1; j <= r; ++j) {
dp[i][j] = INF;
}
}
}
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int n;
cin >> n;
for (int i = 1; i <= n; ++i) {
for (int j = 1; j <= n; ++j) {
cin >> a[i][j];
}
}
solve(1, n);
long long ans = INF;
for (int i = 1; i <= n / 2; ++i) {
for (int j = n / 2 + 1; j <= n; ++j) {
ans = min(ans, dp[i][j]);
ans = min(ans, dp[j][i]);
}
}
cout << ans << '\n';
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
12636 KB |
Output is correct |
2 |
Correct |
1 ms |
12636 KB |
Output is correct |
3 |
Correct |
1 ms |
12748 KB |
Output is correct |
4 |
Correct |
2 ms |
12760 KB |
Output is correct |
5 |
Correct |
1 ms |
12636 KB |
Output is correct |
6 |
Correct |
1 ms |
12636 KB |
Output is correct |
7 |
Correct |
1 ms |
12636 KB |
Output is correct |
8 |
Correct |
1 ms |
12636 KB |
Output is correct |
9 |
Correct |
1 ms |
12632 KB |
Output is correct |
10 |
Correct |
1 ms |
12636 KB |
Output is correct |
11 |
Correct |
1 ms |
12636 KB |
Output is correct |
12 |
Correct |
1 ms |
12752 KB |
Output is correct |
13 |
Correct |
2 ms |
12632 KB |
Output is correct |
14 |
Correct |
1 ms |
12768 KB |
Output is correct |
15 |
Correct |
1 ms |
12632 KB |
Output is correct |
16 |
Correct |
1 ms |
12636 KB |
Output is correct |
17 |
Correct |
1 ms |
12636 KB |
Output is correct |
18 |
Correct |
1 ms |
12636 KB |
Output is correct |
19 |
Correct |
1 ms |
12636 KB |
Output is correct |
20 |
Correct |
1 ms |
12632 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
12636 KB |
Output is correct |
2 |
Correct |
1 ms |
12636 KB |
Output is correct |
3 |
Correct |
1 ms |
12748 KB |
Output is correct |
4 |
Correct |
2 ms |
12760 KB |
Output is correct |
5 |
Correct |
1 ms |
12636 KB |
Output is correct |
6 |
Correct |
1 ms |
12636 KB |
Output is correct |
7 |
Correct |
1 ms |
12636 KB |
Output is correct |
8 |
Correct |
1 ms |
12636 KB |
Output is correct |
9 |
Correct |
1 ms |
12632 KB |
Output is correct |
10 |
Correct |
1 ms |
12636 KB |
Output is correct |
11 |
Correct |
1 ms |
12636 KB |
Output is correct |
12 |
Correct |
1 ms |
12752 KB |
Output is correct |
13 |
Correct |
2 ms |
12632 KB |
Output is correct |
14 |
Correct |
1 ms |
12768 KB |
Output is correct |
15 |
Correct |
1 ms |
12632 KB |
Output is correct |
16 |
Correct |
1 ms |
12636 KB |
Output is correct |
17 |
Correct |
1 ms |
12636 KB |
Output is correct |
18 |
Correct |
1 ms |
12636 KB |
Output is correct |
19 |
Correct |
1 ms |
12636 KB |
Output is correct |
20 |
Correct |
1 ms |
12632 KB |
Output is correct |
21 |
Correct |
3 ms |
12892 KB |
Output is correct |
22 |
Correct |
3 ms |
12892 KB |
Output is correct |
23 |
Correct |
4 ms |
12912 KB |
Output is correct |
24 |
Correct |
2 ms |
12636 KB |
Output is correct |
25 |
Correct |
2 ms |
12764 KB |
Output is correct |
26 |
Correct |
3 ms |
12868 KB |
Output is correct |
27 |
Correct |
3 ms |
12892 KB |
Output is correct |
28 |
Correct |
3 ms |
12892 KB |
Output is correct |
29 |
Correct |
4 ms |
12980 KB |
Output is correct |
30 |
Correct |
3 ms |
12892 KB |
Output is correct |
31 |
Correct |
3 ms |
12892 KB |
Output is correct |
32 |
Correct |
3 ms |
12892 KB |
Output is correct |
33 |
Correct |
3 ms |
12892 KB |
Output is correct |
34 |
Correct |
3 ms |
12980 KB |
Output is correct |
35 |
Correct |
3 ms |
12892 KB |
Output is correct |
36 |
Correct |
3 ms |
12760 KB |
Output is correct |
37 |
Correct |
5 ms |
12872 KB |
Output is correct |
38 |
Correct |
3 ms |
12892 KB |
Output is correct |
39 |
Correct |
3 ms |
12892 KB |
Output is correct |
40 |
Correct |
3 ms |
12892 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
12636 KB |
Output is correct |
2 |
Correct |
1 ms |
12636 KB |
Output is correct |
3 |
Correct |
1 ms |
12748 KB |
Output is correct |
4 |
Correct |
2 ms |
12760 KB |
Output is correct |
5 |
Correct |
1 ms |
12636 KB |
Output is correct |
6 |
Correct |
1 ms |
12636 KB |
Output is correct |
7 |
Correct |
1 ms |
12636 KB |
Output is correct |
8 |
Correct |
1 ms |
12636 KB |
Output is correct |
9 |
Correct |
1 ms |
12632 KB |
Output is correct |
10 |
Correct |
1 ms |
12636 KB |
Output is correct |
11 |
Correct |
1 ms |
12636 KB |
Output is correct |
12 |
Correct |
1 ms |
12752 KB |
Output is correct |
13 |
Correct |
2 ms |
12632 KB |
Output is correct |
14 |
Correct |
1 ms |
12768 KB |
Output is correct |
15 |
Correct |
1 ms |
12632 KB |
Output is correct |
16 |
Correct |
1 ms |
12636 KB |
Output is correct |
17 |
Correct |
1 ms |
12636 KB |
Output is correct |
18 |
Correct |
1 ms |
12636 KB |
Output is correct |
19 |
Correct |
1 ms |
12636 KB |
Output is correct |
20 |
Correct |
1 ms |
12632 KB |
Output is correct |
21 |
Correct |
3 ms |
12892 KB |
Output is correct |
22 |
Correct |
3 ms |
12892 KB |
Output is correct |
23 |
Correct |
4 ms |
12912 KB |
Output is correct |
24 |
Correct |
2 ms |
12636 KB |
Output is correct |
25 |
Correct |
2 ms |
12764 KB |
Output is correct |
26 |
Correct |
3 ms |
12868 KB |
Output is correct |
27 |
Correct |
3 ms |
12892 KB |
Output is correct |
28 |
Correct |
3 ms |
12892 KB |
Output is correct |
29 |
Correct |
4 ms |
12980 KB |
Output is correct |
30 |
Correct |
3 ms |
12892 KB |
Output is correct |
31 |
Correct |
3 ms |
12892 KB |
Output is correct |
32 |
Correct |
3 ms |
12892 KB |
Output is correct |
33 |
Correct |
3 ms |
12892 KB |
Output is correct |
34 |
Correct |
3 ms |
12980 KB |
Output is correct |
35 |
Correct |
3 ms |
12892 KB |
Output is correct |
36 |
Correct |
3 ms |
12760 KB |
Output is correct |
37 |
Correct |
5 ms |
12872 KB |
Output is correct |
38 |
Correct |
3 ms |
12892 KB |
Output is correct |
39 |
Correct |
3 ms |
12892 KB |
Output is correct |
40 |
Correct |
3 ms |
12892 KB |
Output is correct |
41 |
Correct |
60 ms |
37716 KB |
Output is correct |
42 |
Correct |
60 ms |
37716 KB |
Output is correct |
43 |
Correct |
61 ms |
37716 KB |
Output is correct |
44 |
Correct |
62 ms |
37724 KB |
Output is correct |
45 |
Correct |
75 ms |
37716 KB |
Output is correct |
46 |
Correct |
62 ms |
37724 KB |
Output is correct |
47 |
Correct |
62 ms |
37936 KB |
Output is correct |
48 |
Correct |
61 ms |
37892 KB |
Output is correct |
49 |
Correct |
60 ms |
37716 KB |
Output is correct |
50 |
Correct |
60 ms |
37724 KB |
Output is correct |
51 |
Correct |
60 ms |
37968 KB |
Output is correct |
52 |
Correct |
61 ms |
37972 KB |
Output is correct |
53 |
Correct |
62 ms |
37972 KB |
Output is correct |
54 |
Correct |
68 ms |
37976 KB |
Output is correct |
55 |
Correct |
64 ms |
37972 KB |
Output is correct |
56 |
Correct |
60 ms |
37980 KB |
Output is correct |
57 |
Correct |
61 ms |
37816 KB |
Output is correct |
58 |
Correct |
60 ms |
37976 KB |
Output is correct |
59 |
Correct |
62 ms |
37952 KB |
Output is correct |
60 |
Correct |
60 ms |
37972 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
12636 KB |
Output is correct |
2 |
Correct |
1 ms |
12636 KB |
Output is correct |
3 |
Correct |
1 ms |
12748 KB |
Output is correct |
4 |
Correct |
2 ms |
12760 KB |
Output is correct |
5 |
Correct |
1 ms |
12636 KB |
Output is correct |
6 |
Correct |
1 ms |
12636 KB |
Output is correct |
7 |
Correct |
1 ms |
12636 KB |
Output is correct |
8 |
Correct |
1 ms |
12636 KB |
Output is correct |
9 |
Correct |
1 ms |
12632 KB |
Output is correct |
10 |
Correct |
1 ms |
12636 KB |
Output is correct |
11 |
Correct |
1 ms |
12636 KB |
Output is correct |
12 |
Correct |
1 ms |
12752 KB |
Output is correct |
13 |
Correct |
2 ms |
12632 KB |
Output is correct |
14 |
Correct |
1 ms |
12768 KB |
Output is correct |
15 |
Correct |
1 ms |
12632 KB |
Output is correct |
16 |
Correct |
1 ms |
12636 KB |
Output is correct |
17 |
Correct |
1 ms |
12636 KB |
Output is correct |
18 |
Correct |
1 ms |
12636 KB |
Output is correct |
19 |
Correct |
1 ms |
12636 KB |
Output is correct |
20 |
Correct |
1 ms |
12632 KB |
Output is correct |
21 |
Correct |
3 ms |
12892 KB |
Output is correct |
22 |
Correct |
3 ms |
12892 KB |
Output is correct |
23 |
Correct |
4 ms |
12912 KB |
Output is correct |
24 |
Correct |
2 ms |
12636 KB |
Output is correct |
25 |
Correct |
2 ms |
12764 KB |
Output is correct |
26 |
Correct |
3 ms |
12868 KB |
Output is correct |
27 |
Correct |
3 ms |
12892 KB |
Output is correct |
28 |
Correct |
3 ms |
12892 KB |
Output is correct |
29 |
Correct |
4 ms |
12980 KB |
Output is correct |
30 |
Correct |
3 ms |
12892 KB |
Output is correct |
31 |
Correct |
3 ms |
12892 KB |
Output is correct |
32 |
Correct |
3 ms |
12892 KB |
Output is correct |
33 |
Correct |
3 ms |
12892 KB |
Output is correct |
34 |
Correct |
3 ms |
12980 KB |
Output is correct |
35 |
Correct |
3 ms |
12892 KB |
Output is correct |
36 |
Correct |
3 ms |
12760 KB |
Output is correct |
37 |
Correct |
5 ms |
12872 KB |
Output is correct |
38 |
Correct |
3 ms |
12892 KB |
Output is correct |
39 |
Correct |
3 ms |
12892 KB |
Output is correct |
40 |
Correct |
3 ms |
12892 KB |
Output is correct |
41 |
Correct |
60 ms |
37716 KB |
Output is correct |
42 |
Correct |
60 ms |
37716 KB |
Output is correct |
43 |
Correct |
61 ms |
37716 KB |
Output is correct |
44 |
Correct |
62 ms |
37724 KB |
Output is correct |
45 |
Correct |
75 ms |
37716 KB |
Output is correct |
46 |
Correct |
62 ms |
37724 KB |
Output is correct |
47 |
Correct |
62 ms |
37936 KB |
Output is correct |
48 |
Correct |
61 ms |
37892 KB |
Output is correct |
49 |
Correct |
60 ms |
37716 KB |
Output is correct |
50 |
Correct |
60 ms |
37724 KB |
Output is correct |
51 |
Correct |
60 ms |
37968 KB |
Output is correct |
52 |
Correct |
61 ms |
37972 KB |
Output is correct |
53 |
Correct |
62 ms |
37972 KB |
Output is correct |
54 |
Correct |
68 ms |
37976 KB |
Output is correct |
55 |
Correct |
64 ms |
37972 KB |
Output is correct |
56 |
Correct |
60 ms |
37980 KB |
Output is correct |
57 |
Correct |
61 ms |
37816 KB |
Output is correct |
58 |
Correct |
60 ms |
37976 KB |
Output is correct |
59 |
Correct |
62 ms |
37952 KB |
Output is correct |
60 |
Correct |
60 ms |
37972 KB |
Output is correct |
61 |
Execution timed out |
1523 ms |
155868 KB |
Time limit exceeded |
62 |
Halted |
0 ms |
0 KB |
- |