/*
-------------- | / | | /
| | /
| * |/ | | ------ *
| | | | / \
| | |\ | | | |\ |
\ | | | \ | | | | \ |
\ | | | \ | | \ / \ |
V | | \ \__/| ----- \ |
*/
#include <bits/stdc++.h>
using namespace std;
#define debug(x) cerr << "\e[1;31m" << #x << " = " << (x) << "\e[0m\n"
#define print(x) emilia_mata_tenshi(#x, begin(x), end(x))
template<typename T> void emilia_mata_tenshi(const char *s, T l, T r) {
cerr << "\e[1;33m" << s << " = [";
while(l != r) {
cerr << *l;
cerr << (++l == r ? ']' : ',');
}
cerr << "\e[0m\n";
}
#define EmiliaMyWife ios::sync_with_stdio(0); cin.tie(NULL);
using ll = int64_t;
using ull = uint64_t;
using ld = long double;
using uint = uint32_t;
const double EPS = 1e-7;
const int INF = 0x3F3F3F3F;
const ll LINF = 4611686018427387903;
const int MOD = 1e9+7;
static auto Lamy_is_cute = []() {
EmiliaMyWife
return 48763;
}();
/*--------------------------------------------------------------------------------------*/
signed main() {
int n;
cin >> n;
vector<vector<int>> sum(n + 1, vector<int>(n + 1)), cost = sum;
vector<int> arr(n + 1), pos(n + 1);
for(int i = 1; i <= n; i++) {
cin >> arr[i];
sum[i][arr[i]]++;
pos[arr[i]] = i;
}
for(int i = 1; i <= n; i++) {
for(int j = 1; j <= n; j++) {
sum[i][j] += sum[i - 1][j] + sum[i][j - 1] - sum[i - 1][j - 1];
}
}
auto que = [&](int x1, int y1, int x2, int y2) {
if(x1 > x2 || y1 > y2)
return 0;
return sum[x2][y2] - sum[x1 - 1][y2] - sum[x2][y1 - 1] + sum[x1 - 1][y1 - 1];
};
for(int i = 1; i <= n; i++) {
for(int j = i; j <= n; j++) {
cost[i][j] = cost[i][j - 1];
cost[i][j] += que(1, i, pos[j] - 1, n);
cost[i][j] -= que(pos[j] + 1, i, n, j);
}
}
vector<int> dp(n + 1, INF);
dp[0] = 0;
for(int i = 1; i <= n; i++) {
for(int j = 1; j <= i; j++)
dp[i] = min(dp[i], dp[j - 1] + cost[j][i]);
}
cout << dp[n] << '\n';
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
0 ms |
204 KB |
Output is correct |
| 7 |
Correct |
0 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
0 ms |
204 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
0 ms |
204 KB |
Output is correct |
| 7 |
Correct |
0 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
0 ms |
204 KB |
Output is correct |
| 11 |
Correct |
0 ms |
204 KB |
Output is correct |
| 12 |
Correct |
0 ms |
204 KB |
Output is correct |
| 13 |
Correct |
0 ms |
204 KB |
Output is correct |
| 14 |
Correct |
0 ms |
204 KB |
Output is correct |
| 15 |
Correct |
0 ms |
316 KB |
Output is correct |
| 16 |
Correct |
0 ms |
204 KB |
Output is correct |
| 17 |
Correct |
0 ms |
312 KB |
Output is correct |
| 18 |
Correct |
0 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
1 ms |
204 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
0 ms |
204 KB |
Output is correct |
| 7 |
Correct |
0 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
0 ms |
204 KB |
Output is correct |
| 11 |
Correct |
0 ms |
204 KB |
Output is correct |
| 12 |
Correct |
0 ms |
204 KB |
Output is correct |
| 13 |
Correct |
0 ms |
204 KB |
Output is correct |
| 14 |
Correct |
0 ms |
204 KB |
Output is correct |
| 15 |
Correct |
0 ms |
316 KB |
Output is correct |
| 16 |
Correct |
0 ms |
204 KB |
Output is correct |
| 17 |
Correct |
0 ms |
312 KB |
Output is correct |
| 18 |
Correct |
0 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
1 ms |
204 KB |
Output is correct |
| 21 |
Correct |
1 ms |
588 KB |
Output is correct |
| 22 |
Correct |
1 ms |
588 KB |
Output is correct |
| 23 |
Correct |
1 ms |
588 KB |
Output is correct |
| 24 |
Correct |
1 ms |
588 KB |
Output is correct |
| 25 |
Correct |
1 ms |
568 KB |
Output is correct |
| 26 |
Correct |
1 ms |
564 KB |
Output is correct |
| 27 |
Correct |
1 ms |
588 KB |
Output is correct |
| 28 |
Correct |
1 ms |
588 KB |
Output is correct |
| 29 |
Correct |
1 ms |
564 KB |
Output is correct |
| 30 |
Correct |
1 ms |
588 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
0 ms |
204 KB |
Output is correct |
| 7 |
Correct |
0 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
0 ms |
204 KB |
Output is correct |
| 11 |
Correct |
0 ms |
204 KB |
Output is correct |
| 12 |
Correct |
0 ms |
204 KB |
Output is correct |
| 13 |
Correct |
0 ms |
204 KB |
Output is correct |
| 14 |
Correct |
0 ms |
204 KB |
Output is correct |
| 15 |
Correct |
0 ms |
316 KB |
Output is correct |
| 16 |
Correct |
0 ms |
204 KB |
Output is correct |
| 17 |
Correct |
0 ms |
312 KB |
Output is correct |
| 18 |
Correct |
0 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
1 ms |
204 KB |
Output is correct |
| 21 |
Correct |
1 ms |
588 KB |
Output is correct |
| 22 |
Correct |
1 ms |
588 KB |
Output is correct |
| 23 |
Correct |
1 ms |
588 KB |
Output is correct |
| 24 |
Correct |
1 ms |
588 KB |
Output is correct |
| 25 |
Correct |
1 ms |
568 KB |
Output is correct |
| 26 |
Correct |
1 ms |
564 KB |
Output is correct |
| 27 |
Correct |
1 ms |
588 KB |
Output is correct |
| 28 |
Correct |
1 ms |
588 KB |
Output is correct |
| 29 |
Correct |
1 ms |
564 KB |
Output is correct |
| 30 |
Correct |
1 ms |
588 KB |
Output is correct |
| 31 |
Correct |
8 ms |
5392 KB |
Output is correct |
| 32 |
Correct |
8 ms |
5396 KB |
Output is correct |
| 33 |
Correct |
8 ms |
5324 KB |
Output is correct |
| 34 |
Correct |
9 ms |
5324 KB |
Output is correct |
| 35 |
Correct |
8 ms |
5404 KB |
Output is correct |
| 36 |
Correct |
10 ms |
5304 KB |
Output is correct |
| 37 |
Correct |
7 ms |
5324 KB |
Output is correct |
| 38 |
Correct |
8 ms |
5324 KB |
Output is correct |
| 39 |
Correct |
7 ms |
5324 KB |
Output is correct |
| 40 |
Correct |
7 ms |
5324 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
204 KB |
Output is correct |
| 2 |
Correct |
0 ms |
204 KB |
Output is correct |
| 3 |
Correct |
0 ms |
204 KB |
Output is correct |
| 4 |
Correct |
0 ms |
204 KB |
Output is correct |
| 5 |
Correct |
1 ms |
204 KB |
Output is correct |
| 6 |
Correct |
0 ms |
204 KB |
Output is correct |
| 7 |
Correct |
0 ms |
204 KB |
Output is correct |
| 8 |
Correct |
0 ms |
204 KB |
Output is correct |
| 9 |
Correct |
1 ms |
204 KB |
Output is correct |
| 10 |
Correct |
0 ms |
204 KB |
Output is correct |
| 11 |
Correct |
0 ms |
204 KB |
Output is correct |
| 12 |
Correct |
0 ms |
204 KB |
Output is correct |
| 13 |
Correct |
0 ms |
204 KB |
Output is correct |
| 14 |
Correct |
0 ms |
204 KB |
Output is correct |
| 15 |
Correct |
0 ms |
316 KB |
Output is correct |
| 16 |
Correct |
0 ms |
204 KB |
Output is correct |
| 17 |
Correct |
0 ms |
312 KB |
Output is correct |
| 18 |
Correct |
0 ms |
204 KB |
Output is correct |
| 19 |
Correct |
1 ms |
204 KB |
Output is correct |
| 20 |
Correct |
1 ms |
204 KB |
Output is correct |
| 21 |
Correct |
1 ms |
588 KB |
Output is correct |
| 22 |
Correct |
1 ms |
588 KB |
Output is correct |
| 23 |
Correct |
1 ms |
588 KB |
Output is correct |
| 24 |
Correct |
1 ms |
588 KB |
Output is correct |
| 25 |
Correct |
1 ms |
568 KB |
Output is correct |
| 26 |
Correct |
1 ms |
564 KB |
Output is correct |
| 27 |
Correct |
1 ms |
588 KB |
Output is correct |
| 28 |
Correct |
1 ms |
588 KB |
Output is correct |
| 29 |
Correct |
1 ms |
564 KB |
Output is correct |
| 30 |
Correct |
1 ms |
588 KB |
Output is correct |
| 31 |
Correct |
8 ms |
5392 KB |
Output is correct |
| 32 |
Correct |
8 ms |
5396 KB |
Output is correct |
| 33 |
Correct |
8 ms |
5324 KB |
Output is correct |
| 34 |
Correct |
9 ms |
5324 KB |
Output is correct |
| 35 |
Correct |
8 ms |
5404 KB |
Output is correct |
| 36 |
Correct |
10 ms |
5304 KB |
Output is correct |
| 37 |
Correct |
7 ms |
5324 KB |
Output is correct |
| 38 |
Correct |
8 ms |
5324 KB |
Output is correct |
| 39 |
Correct |
7 ms |
5324 KB |
Output is correct |
| 40 |
Correct |
7 ms |
5324 KB |
Output is correct |
| 41 |
Correct |
650 ms |
196228 KB |
Output is correct |
| 42 |
Correct |
652 ms |
196472 KB |
Output is correct |
| 43 |
Correct |
653 ms |
196444 KB |
Output is correct |
| 44 |
Correct |
682 ms |
196460 KB |
Output is correct |
| 45 |
Correct |
676 ms |
196532 KB |
Output is correct |
| 46 |
Correct |
652 ms |
196420 KB |
Output is correct |
| 47 |
Correct |
642 ms |
196632 KB |
Output is correct |
| 48 |
Correct |
661 ms |
196504 KB |
Output is correct |
| 49 |
Correct |
669 ms |
196608 KB |
Output is correct |
| 50 |
Correct |
661 ms |
196496 KB |
Output is correct |
| 51 |
Correct |
647 ms |
196472 KB |
Output is correct |
| 52 |
Correct |
658 ms |
196568 KB |
Output is correct |
| 53 |
Correct |
653 ms |
196476 KB |
Output is correct |
| 54 |
Correct |
719 ms |
196496 KB |
Output is correct |
| 55 |
Correct |
638 ms |
196648 KB |
Output is correct |
