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답안 #950545

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
950545 2024-03-20T12:14:06 Z andrei_boaca Chorus (JOI23_chorus) C++17
61 / 100
 7000 ms 12980 KB 
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
const ll INF=1e17;
ll n,k,lga,lgb,makegood;
ll A[1000005],B[1000005];
struct date
{
    ll val,l,r;
} dp[1000005];
pll v[1000005];
string str;
date combine(date a, date b)
{
    if(a.val<b.val)
        return a;
    if(a.val>b.val)
        return b;
    a.l=min(a.l,b.l);
    a.r=max(a.r,b.r);
    return a;
}
void solve(ll cost)
{
    for(int i=n;i>=1;i--)
    {
        dp[i]={INF,0,0};
        ll suma=0;
        ll C=0;
        int ind=i;
        for(int j=i;j<=n;j++)
        {
            while(ind<=n&&B[ind]<A[j])
            {
                suma++;
                ind++;
            }
            C+=suma;
            date a=dp[j+1];
            a.val+=C+cost;
            a.l++;
            a.r++;
            dp[i]=combine(dp[i],a);
        }
    }
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin>>n>>k;
    cin>>str;
    for(int i=0;i<str.size();i++)
    {
        if(str[i]=='A')
            A[++lga]=i+1;
        else
            B[++lgb]=i+1;
    }
    for(int i=1;i<=n;i++)
        if(A[i]>B[i])
        {
            ll x=A[i];
            A[i]=B[i];
            for(int j=i;j<=n;j++)
            {
                if(B[j]<x)
                {
                    B[j]++;
                    makegood++;
                }
                else
                    break;
            }
        }
    ll st=0;
    ll dr=2e12;
    while(st<=dr)
    {
        ll mij=(st+dr)/2;
        solve(mij);
        if(dp[1].l<=k&&dp[1].r>=k)
        {
            ll rez=dp[1].val-mij*k;
            cout<<rez+makegood;
            return 0;
        }
        if(dp[1].l>k)
            st=mij+1;
        else
            dr=mij-1;
    }
    return 0;
}

Compilation message

chorus.cpp: In function 'int main()':
chorus.cpp:55:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |     for(int i=0;i<str.size();i++)
      |                 ~^~~~~~~~~~~

Subtask #1
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6608 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 7000 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6560 KB Output is correct

Subtask #2
24.0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6608 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 7000 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6560 KB Output is correct
17 Correct 5 ms 6492 KB Output is correct
18 Correct 19 ms 6492 KB Output is correct
19 Correct 24 ms 6488 KB Output is correct
20 Correct 3 ms 6744 KB Output is correct
21 Correct 8 ms 6492 KB Output is correct
22 Correct 12 ms 6492 KB Output is correct
23 Correct 11 ms 6492 KB Output is correct
24 Correct 17 ms 6488 KB Output is correct
25 Correct 12 ms 6492 KB Output is correct
26 Correct 13 ms 6492 KB Output is correct
27 Correct 13 ms 6620 KB Output is correct
28 Correct 13 ms 6744 KB Output is correct

Subtask #3
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6608 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 7000 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6560 KB Output is correct
17 Correct 5 ms 6492 KB Output is correct
18 Correct 19 ms 6492 KB Output is correct
19 Correct 24 ms 6488 KB Output is correct
20 Correct 3 ms 6744 KB Output is correct
21 Correct 8 ms 6492 KB Output is correct
22 Correct 12 ms 6492 KB Output is correct
23 Correct 11 ms 6492 KB Output is correct
24 Correct 17 ms 6488 KB Output is correct
25 Correct 12 ms 6492 KB Output is correct
26 Correct 13 ms 6492 KB Output is correct
27 Correct 13 ms 6620 KB Output is correct
28 Correct 13 ms 6744 KB Output is correct
29 Correct 1210 ms 8664 KB Output is correct
30 Correct 2426 ms 8788 KB Output is correct
31 Correct 2421 ms 8668 KB Output is correct
32 Correct 37 ms 8784 KB Output is correct
33 Correct 518 ms 8668 KB Output is correct
34 Correct 1055 ms 8664 KB Output is correct
35 Correct 1072 ms 8788 KB Output is correct
36 Correct 1469 ms 8672 KB Output is correct
37 Correct 2019 ms 8672 KB Output is correct
38 Correct 1080 ms 8664 KB Output is correct
39 Correct 1569 ms 8664 KB Output is correct
40 Correct 1166 ms 8788 KB Output is correct
41 Correct 1055 ms 8668 KB Output is correct
42 Correct 1063 ms 8672 KB Output is correct

Subtask #4
0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6608 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 7000 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6560 KB Output is correct
17 Correct 5 ms 6492 KB Output is correct
18 Correct 19 ms 6492 KB Output is correct
19 Correct 24 ms 6488 KB Output is correct
20 Correct 3 ms 6744 KB Output is correct
21 Correct 8 ms 6492 KB Output is correct
22 Correct 12 ms 6492 KB Output is correct
23 Correct 11 ms 6492 KB Output is correct
24 Correct 17 ms 6488 KB Output is correct
25 Correct 12 ms 6492 KB Output is correct
26 Correct 13 ms 6492 KB Output is correct
27 Correct 13 ms 6620 KB Output is correct
28 Correct 13 ms 6744 KB Output is correct
29 Correct 1210 ms 8664 KB Output is correct
30 Correct 2426 ms 8788 KB Output is correct
31 Correct 2421 ms 8668 KB Output is correct
32 Correct 37 ms 8784 KB Output is correct
33 Correct 518 ms 8668 KB Output is correct
34 Correct 1055 ms 8664 KB Output is correct
35 Correct 1072 ms 8788 KB Output is correct
36 Correct 1469 ms 8672 KB Output is correct
37 Correct 2019 ms 8672 KB Output is correct
38 Correct 1080 ms 8664 KB Output is correct
39 Correct 1569 ms 8664 KB Output is correct
40 Correct 1166 ms 8788 KB Output is correct
41 Correct 1055 ms 8668 KB Output is correct
42 Correct 1063 ms 8672 KB Output is correct
43 Execution timed out 7031 ms 12980 KB Time limit exceeded
44 Halted 0 ms 0 KB -

Subtask #5
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 2 ms 6492 KB Output is correct
6 Correct 2 ms 6492 KB Output is correct
7 Correct 2 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6492 KB Output is correct
11 Correct 1 ms 6608 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 7000 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6560 KB Output is correct
17 Correct 5 ms 6492 KB Output is correct
18 Correct 19 ms 6492 KB Output is correct
19 Correct 24 ms 6488 KB Output is correct
20 Correct 3 ms 6744 KB Output is correct
21 Correct 8 ms 6492 KB Output is correct
22 Correct 12 ms 6492 KB Output is correct
23 Correct 11 ms 6492 KB Output is correct
24 Correct 17 ms 6488 KB Output is correct
25 Correct 12 ms 6492 KB Output is correct
26 Correct 13 ms 6492 KB Output is correct
27 Correct 13 ms 6620 KB Output is correct
28 Correct 13 ms 6744 KB Output is correct
29 Correct 1210 ms 8664 KB Output is correct
30 Correct 2426 ms 8788 KB Output is correct
31 Correct 2421 ms 8668 KB Output is correct
32 Correct 37 ms 8784 KB Output is correct
33 Correct 518 ms 8668 KB Output is correct
34 Correct 1055 ms 8664 KB Output is correct
35 Correct 1072 ms 8788 KB Output is correct
36 Correct 1469 ms 8672 KB Output is correct
37 Correct 2019 ms 8672 KB Output is correct
38 Correct 1080 ms 8664 KB Output is correct
39 Correct 1569 ms 8664 KB Output is correct
40 Correct 1166 ms 8788 KB Output is correct
41 Correct 1055 ms 8668 KB Output is correct
42 Correct 1063 ms 8672 KB Output is correct
43 Execution timed out 7031 ms 12980 KB Time limit exceeded
44 Halted 0 ms 0 KB -