| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 699835 |
2023-02-18T05:52:57 Z |
bdl |
Group Photo (JOI21_ho_t3) |
C++17 |
|
292 ms |
98380 KB |
#include <iostream>
using namespace std;
const int N = 5e3;
int main() {
int n;
scanf("%d", &n);
static int o[N + 1];
for (int i = 1; i <= n; i++) {
int a;
scanf("%d", &a);
o[a] = i;
}
static int s[N + 1][N + 1];
for (int i = 1; i <= n; i++)
for (int j = 1; j <= n; j++)
s[i][j] = s[i - 1][j] + s[i][j - 1] - s[i - 1][j - 1] + (i < j && o[i] > o[j]);
auto inv = [&](int i1, int i2, int j1, int j2) {
return s[i2][j2] - s[i1 - 1][j2] - s[i2][j1 - 1] + s[i1 - 1][j1 - 1];
};
auto ninv = [&](int i, int j) {
return (j - i + 1) * (j - i) / 2 - inv(i, j, i, j);
};
static int f[N + 1];
for (int i = 1; i <= n; i++) {
f[i] = ninv(1, i);
for (int j = 1; j < i; j++)
f[i] = min(f[i], f[j] + inv(1, j, j + 1, i) + ninv(j + 1, i));
}
printf("%d\n", f[n]);
return 0;
}
Compilation message
Main.cpp: In function 'int main()':
Main.cpp:8:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
8 | scanf("%d", &n);
| ~~~~~^~~~~~~~~~
Main.cpp:12:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
12 | scanf("%d", &a);
| ~~~~~^~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
0 ms |
308 KB |
Output is correct |
| 7 |
Correct |
1 ms |
340 KB |
Output is correct |
| 8 |
Correct |
0 ms |
340 KB |
Output is correct |
| 9 |
Correct |
0 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
0 ms |
308 KB |
Output is correct |
| 7 |
Correct |
1 ms |
340 KB |
Output is correct |
| 8 |
Correct |
0 ms |
340 KB |
Output is correct |
| 9 |
Correct |
0 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
1 ms |
308 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
0 ms |
316 KB |
Output is correct |
| 18 |
Correct |
1 ms |
340 KB |
Output is correct |
| 19 |
Correct |
1 ms |
340 KB |
Output is correct |
| 20 |
Correct |
1 ms |
340 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
0 ms |
308 KB |
Output is correct |
| 7 |
Correct |
1 ms |
340 KB |
Output is correct |
| 8 |
Correct |
0 ms |
340 KB |
Output is correct |
| 9 |
Correct |
0 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
1 ms |
308 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
0 ms |
316 KB |
Output is correct |
| 18 |
Correct |
1 ms |
340 KB |
Output is correct |
| 19 |
Correct |
1 ms |
340 KB |
Output is correct |
| 20 |
Correct |
1 ms |
340 KB |
Output is correct |
| 21 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 22 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 23 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 24 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 25 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 26 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 27 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 28 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 29 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 30 |
Correct |
1 ms |
1236 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
0 ms |
308 KB |
Output is correct |
| 7 |
Correct |
1 ms |
340 KB |
Output is correct |
| 8 |
Correct |
0 ms |
340 KB |
Output is correct |
| 9 |
Correct |
0 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
1 ms |
308 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
0 ms |
316 KB |
Output is correct |
| 18 |
Correct |
1 ms |
340 KB |
Output is correct |
| 19 |
Correct |
1 ms |
340 KB |
Output is correct |
| 20 |
Correct |
1 ms |
340 KB |
Output is correct |
| 21 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 22 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 23 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 24 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 25 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 26 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 27 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 28 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 29 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 30 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 31 |
Correct |
7 ms |
5940 KB |
Output is correct |
| 32 |
Correct |
7 ms |
5940 KB |
Output is correct |
| 33 |
Correct |
6 ms |
5972 KB |
Output is correct |
| 34 |
Correct |
7 ms |
6012 KB |
Output is correct |
| 35 |
Correct |
7 ms |
5972 KB |
Output is correct |
| 36 |
Correct |
7 ms |
5972 KB |
Output is correct |
| 37 |
Correct |
6 ms |
5972 KB |
Output is correct |
| 38 |
Correct |
7 ms |
5944 KB |
Output is correct |
| 39 |
Correct |
7 ms |
6008 KB |
Output is correct |
| 40 |
Correct |
7 ms |
5972 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
340 KB |
Output is correct |
| 2 |
Correct |
1 ms |
212 KB |
Output is correct |
| 3 |
Correct |
1 ms |
212 KB |
Output is correct |
| 4 |
Correct |
1 ms |
340 KB |
Output is correct |
| 5 |
Correct |
1 ms |
340 KB |
Output is correct |
| 6 |
Correct |
0 ms |
308 KB |
Output is correct |
| 7 |
Correct |
1 ms |
340 KB |
Output is correct |
| 8 |
Correct |
0 ms |
340 KB |
Output is correct |
| 9 |
Correct |
0 ms |
340 KB |
Output is correct |
| 10 |
Correct |
1 ms |
340 KB |
Output is correct |
| 11 |
Correct |
1 ms |
340 KB |
Output is correct |
| 12 |
Correct |
1 ms |
340 KB |
Output is correct |
| 13 |
Correct |
1 ms |
340 KB |
Output is correct |
| 14 |
Correct |
1 ms |
340 KB |
Output is correct |
| 15 |
Correct |
1 ms |
308 KB |
Output is correct |
| 16 |
Correct |
1 ms |
340 KB |
Output is correct |
| 17 |
Correct |
0 ms |
316 KB |
Output is correct |
| 18 |
Correct |
1 ms |
340 KB |
Output is correct |
| 19 |
Correct |
1 ms |
340 KB |
Output is correct |
| 20 |
Correct |
1 ms |
340 KB |
Output is correct |
| 21 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 22 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 23 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 24 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 25 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 26 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 27 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 28 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 29 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 30 |
Correct |
1 ms |
1236 KB |
Output is correct |
| 31 |
Correct |
7 ms |
5940 KB |
Output is correct |
| 32 |
Correct |
7 ms |
5940 KB |
Output is correct |
| 33 |
Correct |
6 ms |
5972 KB |
Output is correct |
| 34 |
Correct |
7 ms |
6012 KB |
Output is correct |
| 35 |
Correct |
7 ms |
5972 KB |
Output is correct |
| 36 |
Correct |
7 ms |
5972 KB |
Output is correct |
| 37 |
Correct |
6 ms |
5972 KB |
Output is correct |
| 38 |
Correct |
7 ms |
5944 KB |
Output is correct |
| 39 |
Correct |
7 ms |
6008 KB |
Output is correct |
| 40 |
Correct |
7 ms |
5972 KB |
Output is correct |
| 41 |
Correct |
270 ms |
98140 KB |
Output is correct |
| 42 |
Correct |
282 ms |
98172 KB |
Output is correct |
| 43 |
Correct |
280 ms |
98380 KB |
Output is correct |
| 44 |
Correct |
282 ms |
98196 KB |
Output is correct |
| 45 |
Correct |
281 ms |
98196 KB |
Output is correct |
| 46 |
Correct |
275 ms |
98164 KB |
Output is correct |
| 47 |
Correct |
286 ms |
98124 KB |
Output is correct |
| 48 |
Correct |
277 ms |
98268 KB |
Output is correct |
| 49 |
Correct |
288 ms |
98208 KB |
Output is correct |
| 50 |
Correct |
285 ms |
98228 KB |
Output is correct |
| 51 |
Correct |
284 ms |
98208 KB |
Output is correct |
| 52 |
Correct |
286 ms |
98208 KB |
Output is correct |
| 53 |
Correct |
292 ms |
98124 KB |
Output is correct |
| 54 |
Correct |
283 ms |
98240 KB |
Output is correct |
| 55 |
Correct |
280 ms |
98200 KB |
Output is correct |
