oj.uz

답안 #779933

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
779933 2023-07-12T03:26:04 Z khoquennguoiminhthuong 구경하기 (JOI13_watching) C++17
100 / 100
 190 ms 16044 KB 
#include<bits/stdc++.h>

using namespace std;
int dp[2005][2005];
int n,p,q;
int a[2005];
bool check(int x) {
    for(int i=1; i<=n; i++)
        for(int j=0; j<=p; j++)
            dp[i][j]=1e9;
    for(int i=0; i<=p; i++)dp[0][i]=0;
    int dd1=1,dd2=1;
    for(int i=1; i<=n; i++) {
        while(a[i]-a[dd1]+1>x)dd1++;
        while(a[i]-a[dd2]+1>2*x)dd2++;
        for(int j=0; j<=p; j++) {
            dp[i][j]=min(dp[i][j],dp[dd2-1][j]+1);
            dp[i][j+1]=min(dp[i][j+1],dp[dd1-1][j]);
        }
    }
    return dp[n][p]<=q;
}
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>n>>p>>q;
    for(int i=1; i<=n; i++)cin>>a[i];
    sort(a+1,a+n+1);
    p=min(p,n);
    q=min(q,n);
    int l=1,r=1e9,mid,kq=1e9;
    while(l<=r) {
        mid=(l+r)/2;
        if(check(mid)==1) {
            r=mid-1;
            kq=mid;
        } else l=mid+1;
    }
    cout<<kq;
    return 0;
}

Subtask #1
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 724 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 724 KB Output is correct
5 Correct 1 ms 724 KB Output is correct
6 Correct 1 ms 724 KB Output is correct
7 Correct 1 ms 724 KB Output is correct
8 Correct 1 ms 724 KB Output is correct
9 Correct 1 ms 712 KB Output is correct
10 Correct 1 ms 724 KB Output is correct
11 Correct 1 ms 724 KB Output is correct
12 Correct 1 ms 724 KB Output is correct
13 Correct 1 ms 608 KB Output is correct
14 Correct 1 ms 724 KB Output is correct
15 Correct 1 ms 724 KB Output is correct

Subtask #2
50.0 / 50.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 8380 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 166 ms 16036 KB Output is correct
4 Correct 190 ms 16044 KB Output is correct
5 Correct 12 ms 8992 KB Output is correct
6 Correct 187 ms 16032 KB Output is correct
7 Correct 6 ms 8404 KB Output is correct
8 Correct 19 ms 9300 KB Output is correct
9 Correct 75 ms 14276 KB Output is correct
10 Correct 190 ms 16036 KB Output is correct
11 Correct 14 ms 9080 KB Output is correct
12 Correct 99 ms 16028 KB Output is correct
13 Correct 5 ms 8396 KB Output is correct
14 Correct 6 ms 8528 KB Output is correct
15 Correct 8 ms 8404 KB Output is correct