#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
const long long INF = 1e18;
int main()
{
cin.tie(0)->sync_with_stdio(0);
int n;
cin >> n;
vector<vector<int>> a(n, vector<int>(n));
for (int i = 0; i < n; i++)
{
for (int j = 0; j < n; j++)
{
cin >> a[i][j];
}
}
if (n == 1)
{
cout << 0 << '\n';
return 0;
}
vector<vector<long long>> dp(n, vector<long long>(n, INF)),
dp2(n, vector<long long>(n, INF));
function<void(int, int)> solve = [&](int l, int r)
{
if (l + 2 == r)
{
dp[l][r - 1] = dp[r - 1][l] = a[l][r - 1];
return;
}
int mid = (l + r) / 2;
solve(l, mid);
solve(mid, r);
for (int i = l; i < (l + mid) / 2; i++)
{
for (int j = (l + mid) / 2; j < mid; j++)
{
for (int k = mid; k < r; k++)
{
dp2[i][k] = min(dp2[i][k], dp[i][j] + a[j][k]);
dp2[j][k] = min(dp2[j][k], dp[j][i] + a[i][k]);
}
}
}
for (int i = l; i < mid; i++)
{
for (int j = mid; j < (mid + r) / 2; j++)
{
for (int k = (mid + r) / 2; k < r; k++)
{
dp[i][k] = min(dp[i][k], dp2[i][j] + dp[j][k]);
dp[i][j] = min(dp[i][j], dp2[i][k] + dp[k][j]);
}
}
}
for (int i = l; i < mid; i++)
{
for (int j = mid; j < r; j++)
{
dp[j][i] = min(dp[j][i], dp[i][j]);
}
}
};
solve(0, n);
long long ans = INF;
for (int i = 0; i < n / 2; i++)
{
for (int j = n / 2; 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 |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
500 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
600 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
504 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
512 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
500 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
600 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
504 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
512 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
2 ms |
604 KB |
Output is correct |
22 |
Correct |
2 ms |
604 KB |
Output is correct |
23 |
Correct |
2 ms |
604 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
25 |
Correct |
1 ms |
348 KB |
Output is correct |
26 |
Correct |
2 ms |
604 KB |
Output is correct |
27 |
Correct |
2 ms |
600 KB |
Output is correct |
28 |
Correct |
2 ms |
600 KB |
Output is correct |
29 |
Correct |
2 ms |
604 KB |
Output is correct |
30 |
Correct |
2 ms |
604 KB |
Output is correct |
31 |
Correct |
2 ms |
604 KB |
Output is correct |
32 |
Correct |
2 ms |
604 KB |
Output is correct |
33 |
Correct |
2 ms |
604 KB |
Output is correct |
34 |
Correct |
3 ms |
1012 KB |
Output is correct |
35 |
Correct |
2 ms |
604 KB |
Output is correct |
36 |
Correct |
2 ms |
604 KB |
Output is correct |
37 |
Correct |
2 ms |
604 KB |
Output is correct |
38 |
Correct |
2 ms |
604 KB |
Output is correct |
39 |
Correct |
2 ms |
604 KB |
Output is correct |
40 |
Correct |
2 ms |
604 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
500 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
600 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
504 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
512 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
2 ms |
604 KB |
Output is correct |
22 |
Correct |
2 ms |
604 KB |
Output is correct |
23 |
Correct |
2 ms |
604 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
25 |
Correct |
1 ms |
348 KB |
Output is correct |
26 |
Correct |
2 ms |
604 KB |
Output is correct |
27 |
Correct |
2 ms |
600 KB |
Output is correct |
28 |
Correct |
2 ms |
600 KB |
Output is correct |
29 |
Correct |
2 ms |
604 KB |
Output is correct |
30 |
Correct |
2 ms |
604 KB |
Output is correct |
31 |
Correct |
2 ms |
604 KB |
Output is correct |
32 |
Correct |
2 ms |
604 KB |
Output is correct |
33 |
Correct |
2 ms |
604 KB |
Output is correct |
34 |
Correct |
3 ms |
1012 KB |
Output is correct |
35 |
Correct |
2 ms |
604 KB |
Output is correct |
36 |
Correct |
2 ms |
604 KB |
Output is correct |
37 |
Correct |
2 ms |
604 KB |
Output is correct |
38 |
Correct |
2 ms |
604 KB |
Output is correct |
39 |
Correct |
2 ms |
604 KB |
Output is correct |
40 |
Correct |
2 ms |
604 KB |
Output is correct |
41 |
Correct |
39 ms |
5628 KB |
Output is correct |
42 |
Correct |
39 ms |
5460 KB |
Output is correct |
43 |
Correct |
40 ms |
5460 KB |
Output is correct |
44 |
Correct |
43 ms |
5596 KB |
Output is correct |
45 |
Correct |
39 ms |
5632 KB |
Output is correct |
46 |
Correct |
39 ms |
5468 KB |
Output is correct |
47 |
Correct |
41 ms |
5632 KB |
Output is correct |
48 |
Correct |
39 ms |
5628 KB |
Output is correct |
49 |
Correct |
40 ms |
5588 KB |
Output is correct |
50 |
Correct |
39 ms |
5468 KB |
Output is correct |
51 |
Correct |
42 ms |
5724 KB |
Output is correct |
52 |
Correct |
39 ms |
5468 KB |
Output is correct |
53 |
Correct |
39 ms |
5592 KB |
Output is correct |
54 |
Correct |
38 ms |
5468 KB |
Output is correct |
55 |
Correct |
38 ms |
5716 KB |
Output is correct |
56 |
Correct |
41 ms |
5628 KB |
Output is correct |
57 |
Correct |
41 ms |
5628 KB |
Output is correct |
58 |
Correct |
38 ms |
5468 KB |
Output is correct |
59 |
Correct |
38 ms |
5468 KB |
Output is correct |
60 |
Correct |
40 ms |
5468 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
500 KB |
Output is correct |
3 |
Correct |
1 ms |
348 KB |
Output is correct |
4 |
Correct |
1 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
1 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
1 ms |
348 KB |
Output is correct |
10 |
Correct |
0 ms |
600 KB |
Output is correct |
11 |
Correct |
1 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
504 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
512 KB |
Output is correct |
20 |
Correct |
1 ms |
348 KB |
Output is correct |
21 |
Correct |
2 ms |
604 KB |
Output is correct |
22 |
Correct |
2 ms |
604 KB |
Output is correct |
23 |
Correct |
2 ms |
604 KB |
Output is correct |
24 |
Correct |
1 ms |
348 KB |
Output is correct |
25 |
Correct |
1 ms |
348 KB |
Output is correct |
26 |
Correct |
2 ms |
604 KB |
Output is correct |
27 |
Correct |
2 ms |
600 KB |
Output is correct |
28 |
Correct |
2 ms |
600 KB |
Output is correct |
29 |
Correct |
2 ms |
604 KB |
Output is correct |
30 |
Correct |
2 ms |
604 KB |
Output is correct |
31 |
Correct |
2 ms |
604 KB |
Output is correct |
32 |
Correct |
2 ms |
604 KB |
Output is correct |
33 |
Correct |
2 ms |
604 KB |
Output is correct |
34 |
Correct |
3 ms |
1012 KB |
Output is correct |
35 |
Correct |
2 ms |
604 KB |
Output is correct |
36 |
Correct |
2 ms |
604 KB |
Output is correct |
37 |
Correct |
2 ms |
604 KB |
Output is correct |
38 |
Correct |
2 ms |
604 KB |
Output is correct |
39 |
Correct |
2 ms |
604 KB |
Output is correct |
40 |
Correct |
2 ms |
604 KB |
Output is correct |
41 |
Correct |
39 ms |
5628 KB |
Output is correct |
42 |
Correct |
39 ms |
5460 KB |
Output is correct |
43 |
Correct |
40 ms |
5460 KB |
Output is correct |
44 |
Correct |
43 ms |
5596 KB |
Output is correct |
45 |
Correct |
39 ms |
5632 KB |
Output is correct |
46 |
Correct |
39 ms |
5468 KB |
Output is correct |
47 |
Correct |
41 ms |
5632 KB |
Output is correct |
48 |
Correct |
39 ms |
5628 KB |
Output is correct |
49 |
Correct |
40 ms |
5588 KB |
Output is correct |
50 |
Correct |
39 ms |
5468 KB |
Output is correct |
51 |
Correct |
42 ms |
5724 KB |
Output is correct |
52 |
Correct |
39 ms |
5468 KB |
Output is correct |
53 |
Correct |
39 ms |
5592 KB |
Output is correct |
54 |
Correct |
38 ms |
5468 KB |
Output is correct |
55 |
Correct |
38 ms |
5716 KB |
Output is correct |
56 |
Correct |
41 ms |
5628 KB |
Output is correct |
57 |
Correct |
41 ms |
5628 KB |
Output is correct |
58 |
Correct |
38 ms |
5468 KB |
Output is correct |
59 |
Correct |
38 ms |
5468 KB |
Output is correct |
60 |
Correct |
40 ms |
5468 KB |
Output is correct |
61 |
Execution timed out |
1522 ms |
82732 KB |
Time limit exceeded |
62 |
Halted |
0 ms |
0 KB |
- |