oj.uz

Submission #935052

# Submission time Handle Problem Language Result Execution time Memory
935052 2024-02-28T13:13:06 Z kim Chorus (JOI23_chorus) C++17
61 / 100
 1133 ms 336408 KB 
#include<bits/stdc++.h>
using namespace std;
using ll=long long;
#define f first
#define s second

const ll inf=1e18;

int a[5005],b[5005],pos[5005];
ll dp[5005][5005],cost[5005][5005];

void play(int l,int r,int optl,int optr,int z){
    if(l>r) return;
    int mid=l+r>>1;
    pair<ll,int> best(inf,0);
    for(int i=optl;i<=min(mid,optr);++i){
        best=min(best,{dp[z-1][i-1]+cost[i][mid],i});
    }
    dp[z][mid]=best.f;
    play(l,mid-1,optl,best.s,z);
    play(mid+1,r,best.s,optr,z);
}

int main(){
    ios::sync_with_stdio(false); cin.tie(0);

    int n,K; cin>>n>>K;
    string s; cin>>s;
    for(int i=0,ia=0,ib=0;i<s.length();++i){
        if(s[i]=='A') a[++ia]=i;
        else b[++ib]=i;
    }
    for(int i=1,j=1;i<=n;++i){
        while(j<=n&&b[j]<a[i]) ++j;
        pos[i]=j;
    }
    for(int i=1;i<=n;++i){
        for(int j=i;j<=n;++j){
            cost[i][j]=cost[i][j-1]+max(0,pos[j]-i);
        }
    }
    for(int i=1;i<=n;++i) dp[1][i]=cost[1][i];
    for(int k=2;k<=K;++k){
        play(1,n,1,n,k);
    }
    cout<<dp[K][n];

    return 0;
}

Compilation message

chorus.cpp: In function 'void play(int, int, int, int, int)':
chorus.cpp:14:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   14 |     int mid=l+r>>1;
      |             ~^~
chorus.cpp: In function 'int main()':
chorus.cpp:29:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     for(int i=0,ia=0,ib=0;i<s.length();++i){
      |                           ~^~~~~~~~~~~

Subtask #1
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2392 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2392 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 2 ms 5212 KB Output is correct
18 Correct 4 ms 11356 KB Output is correct
19 Correct 7 ms 17496 KB Output is correct
20 Correct 2 ms 7260 KB Output is correct
21 Correct 2 ms 7260 KB Output is correct
22 Correct 8 ms 27792 KB Output is correct
23 Correct 7 ms 27740 KB Output is correct
24 Correct 3 ms 7260 KB Output is correct
25 Correct 7 ms 27656 KB Output is correct
26 Correct 7 ms 23644 KB Output is correct
27 Correct 4 ms 13404 KB Output is correct
28 Correct 4 ms 13400 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2392 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 2 ms 5212 KB Output is correct
18 Correct 4 ms 11356 KB Output is correct
19 Correct 7 ms 17496 KB Output is correct
20 Correct 2 ms 7260 KB Output is correct
21 Correct 2 ms 7260 KB Output is correct
22 Correct 8 ms 27792 KB Output is correct
23 Correct 7 ms 27740 KB Output is correct
24 Correct 3 ms 7260 KB Output is correct
25 Correct 7 ms 27656 KB Output is correct
26 Correct 7 ms 23644 KB Output is correct
27 Correct 4 ms 13404 KB Output is correct
28 Correct 4 ms 13400 KB Output is correct
29 Correct 431 ms 220132 KB Output is correct
30 Correct 1133 ms 310296 KB Output is correct
31 Correct 302 ms 182744 KB Output is correct
32 Correct 58 ms 140624 KB Output is correct
33 Correct 60 ms 140752 KB Output is correct
34 Correct 841 ms 336392 KB Output is correct
35 Correct 903 ms 336408 KB Output is correct
36 Correct 63 ms 140884 KB Output is correct
37 Correct 305 ms 180704 KB Output is correct
38 Correct 741 ms 302676 KB Output is correct
39 Correct 587 ms 234028 KB Output is correct
40 Correct 334 ms 207288 KB Output is correct
41 Correct 319 ms 207184 KB Output is correct
42 Correct 658 ms 207380 KB Output is correct

Subtask #4
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2392 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 2 ms 5212 KB Output is correct
18 Correct 4 ms 11356 KB Output is correct
19 Correct 7 ms 17496 KB Output is correct
20 Correct 2 ms 7260 KB Output is correct
21 Correct 2 ms 7260 KB Output is correct
22 Correct 8 ms 27792 KB Output is correct
23 Correct 7 ms 27740 KB Output is correct
24 Correct 3 ms 7260 KB Output is correct
25 Correct 7 ms 27656 KB Output is correct
26 Correct 7 ms 23644 KB Output is correct
27 Correct 4 ms 13404 KB Output is correct
28 Correct 4 ms 13400 KB Output is correct
29 Correct 431 ms 220132 KB Output is correct
30 Correct 1133 ms 310296 KB Output is correct
31 Correct 302 ms 182744 KB Output is correct
32 Correct 58 ms 140624 KB Output is correct
33 Correct 60 ms 140752 KB Output is correct
34 Correct 841 ms 336392 KB Output is correct
35 Correct 903 ms 336408 KB Output is correct
36 Correct 63 ms 140884 KB Output is correct
37 Correct 305 ms 180704 KB Output is correct
38 Correct 741 ms 302676 KB Output is correct
39 Correct 587 ms 234028 KB Output is correct
40 Correct 334 ms 207288 KB Output is correct
41 Correct 319 ms 207184 KB Output is correct
42 Correct 658 ms 207380 KB Output is correct
43 Runtime error 9 ms 1108 KB Execution killed with signal 11
44 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 0 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 0 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2392 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 2 ms 5212 KB Output is correct
18 Correct 4 ms 11356 KB Output is correct
19 Correct 7 ms 17496 KB Output is correct
20 Correct 2 ms 7260 KB Output is correct
21 Correct 2 ms 7260 KB Output is correct
22 Correct 8 ms 27792 KB Output is correct
23 Correct 7 ms 27740 KB Output is correct
24 Correct 3 ms 7260 KB Output is correct
25 Correct 7 ms 27656 KB Output is correct
26 Correct 7 ms 23644 KB Output is correct
27 Correct 4 ms 13404 KB Output is correct
28 Correct 4 ms 13400 KB Output is correct
29 Correct 431 ms 220132 KB Output is correct
30 Correct 1133 ms 310296 KB Output is correct
31 Correct 302 ms 182744 KB Output is correct
32 Correct 58 ms 140624 KB Output is correct
33 Correct 60 ms 140752 KB Output is correct
34 Correct 841 ms 336392 KB Output is correct
35 Correct 903 ms 336408 KB Output is correct
36 Correct 63 ms 140884 KB Output is correct
37 Correct 305 ms 180704 KB Output is correct
38 Correct 741 ms 302676 KB Output is correct
39 Correct 587 ms 234028 KB Output is correct
40 Correct 334 ms 207288 KB Output is correct
41 Correct 319 ms 207184 KB Output is correct
42 Correct 658 ms 207380 KB Output is correct
43 Runtime error 9 ms 1108 KB Execution killed with signal 11
44 Halted 0 ms 0 KB -