Submission #429779

#	Time	Username	Problem	Language	Result	Execution time	Memory
429779		mosiashvililuka	The short shank; Redemption (BOI21_prison)	C++14	15 / 100	2086 ms	39364 KiB

prison

#include<bits/stdc++.h>
using namespace std;
long long a,b,c,d,e,i,j,ii,jj,zx,xc,k,T,f[2000009];
vector <long long> dp[500009];
int main(){
	ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
	cin>>a>>k>>T;
	for(i=1; i<=a; i++){
		cin>>f[i];
	}
	for(i=0; i<=a+1; i++){
		dp[i].resize(k+3);
	}
	for(i=0; i<=a+1; i++){
		for(j=0; j<=k+1; j++){
			dp[i][j]=a+3;
		}
	}
	for(i=1; i<=a; i++){
		zx=0;c=f[i];
		for(ii=i; ii<=a; ii++){
			xc=(min(f[ii],c+1)<=T);
			zx+=xc;
			c=min(f[ii],c+1);
		}
		dp[i][0]=zx;
	}
	dp[a+1][0]=0;
	for(i=a; i>=1; i--){
		for(j=1; j<=k; j++){
			zx=0;c=f[i];
			for(ii=i; ii<=a; ii++){
				xc=(min(f[ii],c+1)<=T);
				zx+=xc;
				e=dp[ii+1][j-1]+zx;
				if(dp[i][j]>e) dp[i][j]=e;
				c=min(c+1,f[ii]);
			}
		}
	}
	cout<<dp[1][k];
	return 0;
}

• Subtask 1: 15 / 15
• Subtask 2: 0 / 10
• Subtask 3: 0 / 20
• Subtask 4: 0 / 10
• Subtask 5: 0 / 25
• Subtask 6: 0 / 20