#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));
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 i1 = l; i1 < (l + mid) / 2; i1++)
{
for (int j1 = (l + mid) / 2; j1 < mid; j1++)
{
for (int i2 = mid; i2 < (mid + r) / 2; i2++)
{
for (int j2 = (mid + r) / 2; j2 < r; j2++)
{
dp[i1][i2] = min(dp[i1][i2], dp[i1][j1] + a[j1][j2] + dp[j2][i2]);
dp[i2][i1] = min(dp[i2][i1], dp[i1][i2]);
dp[i1][j2] = min(dp[i1][j2], dp[i1][j1] + a[j1][i2] + dp[i2][j2]);
dp[j2][i1] = min(dp[j2][i1], dp[i1][j2]);
dp[j1][i2] = min(dp[j1][i2], dp[j1][i1] + a[i1][j2] + dp[j2][i2]);
dp[i2][j1] = min(dp[i2][j1], dp[j1][i2]);
dp[j1][j2] = min(dp[j1][j2], dp[j1][i1] + a[i1][i2] + dp[i2][j2]);
dp[j2][j1] = min(dp[j2][j1], dp[j1][j2]);
}
}
}
}
};
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;
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
464 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
352 KB |
Output is correct |
6 |
Correct |
0 ms |
356 KB |
Output is correct |
7 |
Correct |
0 ms |
600 KB |
Output is correct |
8 |
Correct |
1 ms |
464 KB |
Output is correct |
9 |
Correct |
1 ms |
352 KB |
Output is correct |
10 |
Correct |
0 ms |
352 KB |
Output is correct |
11 |
Correct |
1 ms |
344 KB |
Output is correct |
12 |
Correct |
0 ms |
352 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
464 KB |
Output is correct |
15 |
Correct |
0 ms |
352 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
352 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
596 KB |
Output is correct |
20 |
Correct |
1 ms |
356 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
464 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
352 KB |
Output is correct |
6 |
Correct |
0 ms |
356 KB |
Output is correct |
7 |
Correct |
0 ms |
600 KB |
Output is correct |
8 |
Correct |
1 ms |
464 KB |
Output is correct |
9 |
Correct |
1 ms |
352 KB |
Output is correct |
10 |
Correct |
0 ms |
352 KB |
Output is correct |
11 |
Correct |
1 ms |
344 KB |
Output is correct |
12 |
Correct |
0 ms |
352 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
464 KB |
Output is correct |
15 |
Correct |
0 ms |
352 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
352 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
596 KB |
Output is correct |
20 |
Correct |
1 ms |
356 KB |
Output is correct |
21 |
Correct |
9 ms |
604 KB |
Output is correct |
22 |
Correct |
9 ms |
860 KB |
Output is correct |
23 |
Correct |
9 ms |
604 KB |
Output is correct |
24 |
Correct |
1 ms |
612 KB |
Output is correct |
25 |
Correct |
1 ms |
352 KB |
Output is correct |
26 |
Correct |
10 ms |
828 KB |
Output is correct |
27 |
Correct |
10 ms |
724 KB |
Output is correct |
28 |
Correct |
10 ms |
612 KB |
Output is correct |
29 |
Correct |
10 ms |
760 KB |
Output is correct |
30 |
Correct |
9 ms |
644 KB |
Output is correct |
31 |
Correct |
9 ms |
604 KB |
Output is correct |
32 |
Correct |
12 ms |
828 KB |
Output is correct |
33 |
Correct |
11 ms |
600 KB |
Output is correct |
34 |
Correct |
9 ms |
604 KB |
Output is correct |
35 |
Correct |
9 ms |
680 KB |
Output is correct |
36 |
Correct |
13 ms |
604 KB |
Output is correct |
37 |
Correct |
9 ms |
600 KB |
Output is correct |
38 |
Correct |
9 ms |
636 KB |
Output is correct |
39 |
Correct |
9 ms |
604 KB |
Output is correct |
40 |
Correct |
9 ms |
692 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
464 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
352 KB |
Output is correct |
6 |
Correct |
0 ms |
356 KB |
Output is correct |
7 |
Correct |
0 ms |
600 KB |
Output is correct |
8 |
Correct |
1 ms |
464 KB |
Output is correct |
9 |
Correct |
1 ms |
352 KB |
Output is correct |
10 |
Correct |
0 ms |
352 KB |
Output is correct |
11 |
Correct |
1 ms |
344 KB |
Output is correct |
12 |
Correct |
0 ms |
352 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
464 KB |
Output is correct |
15 |
Correct |
0 ms |
352 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
352 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
596 KB |
Output is correct |
20 |
Correct |
1 ms |
356 KB |
Output is correct |
21 |
Correct |
9 ms |
604 KB |
Output is correct |
22 |
Correct |
9 ms |
860 KB |
Output is correct |
23 |
Correct |
9 ms |
604 KB |
Output is correct |
24 |
Correct |
1 ms |
612 KB |
Output is correct |
25 |
Correct |
1 ms |
352 KB |
Output is correct |
26 |
Correct |
10 ms |
828 KB |
Output is correct |
27 |
Correct |
10 ms |
724 KB |
Output is correct |
28 |
Correct |
10 ms |
612 KB |
Output is correct |
29 |
Correct |
10 ms |
760 KB |
Output is correct |
30 |
Correct |
9 ms |
644 KB |
Output is correct |
31 |
Correct |
9 ms |
604 KB |
Output is correct |
32 |
Correct |
12 ms |
828 KB |
Output is correct |
33 |
Correct |
11 ms |
600 KB |
Output is correct |
34 |
Correct |
9 ms |
604 KB |
Output is correct |
35 |
Correct |
9 ms |
680 KB |
Output is correct |
36 |
Correct |
13 ms |
604 KB |
Output is correct |
37 |
Correct |
9 ms |
600 KB |
Output is correct |
38 |
Correct |
9 ms |
636 KB |
Output is correct |
39 |
Correct |
9 ms |
604 KB |
Output is correct |
40 |
Correct |
9 ms |
692 KB |
Output is correct |
41 |
Execution timed out |
1519 ms |
6228 KB |
Time limit exceeded |
42 |
Halted |
0 ms |
0 KB |
- |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
0 ms |
348 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
464 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
1 ms |
352 KB |
Output is correct |
6 |
Correct |
0 ms |
356 KB |
Output is correct |
7 |
Correct |
0 ms |
600 KB |
Output is correct |
8 |
Correct |
1 ms |
464 KB |
Output is correct |
9 |
Correct |
1 ms |
352 KB |
Output is correct |
10 |
Correct |
0 ms |
352 KB |
Output is correct |
11 |
Correct |
1 ms |
344 KB |
Output is correct |
12 |
Correct |
0 ms |
352 KB |
Output is correct |
13 |
Correct |
1 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
464 KB |
Output is correct |
15 |
Correct |
0 ms |
352 KB |
Output is correct |
16 |
Correct |
1 ms |
348 KB |
Output is correct |
17 |
Correct |
1 ms |
352 KB |
Output is correct |
18 |
Correct |
1 ms |
348 KB |
Output is correct |
19 |
Correct |
1 ms |
596 KB |
Output is correct |
20 |
Correct |
1 ms |
356 KB |
Output is correct |
21 |
Correct |
9 ms |
604 KB |
Output is correct |
22 |
Correct |
9 ms |
860 KB |
Output is correct |
23 |
Correct |
9 ms |
604 KB |
Output is correct |
24 |
Correct |
1 ms |
612 KB |
Output is correct |
25 |
Correct |
1 ms |
352 KB |
Output is correct |
26 |
Correct |
10 ms |
828 KB |
Output is correct |
27 |
Correct |
10 ms |
724 KB |
Output is correct |
28 |
Correct |
10 ms |
612 KB |
Output is correct |
29 |
Correct |
10 ms |
760 KB |
Output is correct |
30 |
Correct |
9 ms |
644 KB |
Output is correct |
31 |
Correct |
9 ms |
604 KB |
Output is correct |
32 |
Correct |
12 ms |
828 KB |
Output is correct |
33 |
Correct |
11 ms |
600 KB |
Output is correct |
34 |
Correct |
9 ms |
604 KB |
Output is correct |
35 |
Correct |
9 ms |
680 KB |
Output is correct |
36 |
Correct |
13 ms |
604 KB |
Output is correct |
37 |
Correct |
9 ms |
600 KB |
Output is correct |
38 |
Correct |
9 ms |
636 KB |
Output is correct |
39 |
Correct |
9 ms |
604 KB |
Output is correct |
40 |
Correct |
9 ms |
692 KB |
Output is correct |
41 |
Execution timed out |
1519 ms |
6228 KB |
Time limit exceeded |
42 |
Halted |
0 ms |
0 KB |
- |