oj.uz

Submission #569084

# Submission time Handle Problem Language Result Execution time Memory
569084 2022-05-26T15:38:23 Z dantoh000 Group Photo (JOI21_ho_t3) C++14
100 / 100
 591 ms 117664 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;
int n;
int a[5005];
int pos[5005];
int cost[5005][5005];
int fw[5005];
int fw2[5005];
int dp[5005];

void up(int *f, int x){
    while (x <= n){
        f[x]++;
        x += x&-x;
    }
}
int qu(int *f, int x){
    int ret = 0;
    while (x){
        ret += f[x];
        x -= x&-x;
    }
    return ret;
}
main(){
    scanf("%lld",&n);
    for (int i = 1; i <= n; i++) {
        scanf("%lld",&a[i]);
        pos[a[i]] = i;
    }
    for (int i = 1; i <= n; i++){
        int pos1 = 0;
        int pos2 = 0;
        for (int j = 1; j <= n; j++){
            fw[j] = 0;
        }
        int num_inv = 0;
        for (int j = i; j <= n; j++){
            int realpos = pos[j] + (i-1)-qu(fw2, pos[j]);
            pos1 += realpos;
            pos2 += j;
            num_inv += qu(fw, pos[j]);
            cost[i][j] = pos1-pos2 + num_inv;
            ///printf("cost %lld %lld = %lld (realpos = %lld, pos = %lld)\n",i,j,cost[i][j],realpos, j);
            up(fw,pos[j]);
        }
        up(fw2, pos[i]);
    }
    dp[0] = 0;
    for (int i = 1; i <= n; i++){
        dp[i] = 1000000000000000000;
        for (int j = 1; j <= i; j++){
            ///printf("dp[%lld] = %lld, + %lld\n",j-1,dp[j-1],cost[j][i]);
            dp[i] = min(dp[i], dp[j-1]+cost[j][i]);
        }
        ///printf("dp[%lld] = %lld\n",i,dp[i]);

    }
    printf("%lld",dp[n]);



}

Compilation message

Main.cpp:26:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   26 | main(){
      | ^~~~
Main.cpp: In function 'int main()':
Main.cpp:27:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |     scanf("%lld",&n);
      |     ~~~~~^~~~~~~~~~~
Main.cpp:29:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |         scanf("%lld",&a[i]);
      |         ~~~~~^~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 308 KB Output is correct
10 Correct 0 ms 340 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 308 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 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 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 1 ms 340 KB Output is correct

Subtask #3
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 308 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 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 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 1236 KB Output is correct
22 Correct 2 ms 1204 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 1204 KB Output is correct
26 Correct 1 ms 1236 KB Output is correct
27 Correct 1 ms 1200 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

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 308 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 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 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 1236 KB Output is correct
22 Correct 2 ms 1204 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 1204 KB Output is correct
26 Correct 1 ms 1236 KB Output is correct
27 Correct 1 ms 1200 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 10 ms 5972 KB Output is correct
32 Correct 10 ms 5972 KB Output is correct
33 Correct 12 ms 6100 KB Output is correct
34 Correct 13 ms 6100 KB Output is correct
35 Correct 11 ms 6100 KB Output is correct
36 Correct 10 ms 6064 KB Output is correct
37 Correct 10 ms 6100 KB Output is correct
38 Correct 10 ms 6100 KB Output is correct
39 Correct 10 ms 6100 KB Output is correct
40 Correct 11 ms 6068 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 308 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 0 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 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 308 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 1236 KB Output is correct
22 Correct 2 ms 1204 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 1204 KB Output is correct
26 Correct 1 ms 1236 KB Output is correct
27 Correct 1 ms 1200 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 10 ms 5972 KB Output is correct
32 Correct 10 ms 5972 KB Output is correct
33 Correct 12 ms 6100 KB Output is correct
34 Correct 13 ms 6100 KB Output is correct
35 Correct 11 ms 6100 KB Output is correct
36 Correct 10 ms 6064 KB Output is correct
37 Correct 10 ms 6100 KB Output is correct
38 Correct 10 ms 6100 KB Output is correct
39 Correct 10 ms 6100 KB Output is correct
40 Correct 11 ms 6068 KB Output is correct
41 Correct 537 ms 117376 KB Output is correct
42 Correct 519 ms 117380 KB Output is correct
43 Correct 533 ms 117456 KB Output is correct
44 Correct 561 ms 117552 KB Output is correct
45 Correct 496 ms 117364 KB Output is correct
46 Correct 558 ms 117572 KB Output is correct
47 Correct 591 ms 117592 KB Output is correct
48 Correct 518 ms 117452 KB Output is correct
49 Correct 531 ms 117580 KB Output is correct
50 Correct 556 ms 117608 KB Output is correct
51 Correct 515 ms 117496 KB Output is correct
52 Correct 557 ms 117576 KB Output is correct
53 Correct 515 ms 117664 KB Output is correct
54 Correct 570 ms 117496 KB Output is correct
55 Correct 528 ms 117452 KB Output is correct