Submission #1004197

#	Time	Username	Problem	Language	Result	Execution time	Memory
1004197		0pt1mus23	Horses (IOI15_horses)	C++14	17 / 100	100 ms	24152 KiB

horses

#include "horses.h"
#include <bits/stdc++.h>
using namespace std;
#define ins insert
#define pb push_back
#define pii pair<int, int>
#define endl '\n'
#define drop(x) cout<<(x)<<endl; return;
#define all(x) x.begin(),x.end()
const int mod = 1e9 +7, sze = 5*1e5, prime = 23;
const int inf = INT_MAX;
int arr[sze],brr[sze];
int n;

const int dse = 1e3; 
int dp[dse+1][dse+1];

int func(){
	int ans=0;
	for(int i=0;i<=n;i++){
		for(int j=0;j<=dse;j++){
			dp[i][j]=-1;
		}
	}
	dp[0][1]=0;
	for(int i=0;i<n;i++){
		for(int j=1;j<=dse;j++){
			if(dp[i][j]!=-1){
				int y =j * arr[i]; 
				// cout<<i<<" "<<j<<" "<<dp[i][j]<<endl;
				for(int k=0;k<=y;k++){
					
					dp[i+1][ y-k ] = (max( dp[i+1][y-k], (dp[i][j] + (k)*brr[i]) %mod));
				}
			}

		}
	}
	for(int i=0;i<=n;i++){
		for(int j=0;j<=dse;j++){
			ans=max(ans,dp[i][j]);
		}
	}
	return ans;
}

int init(int N, int X[], int Y[]) {
	n=N;
	for(int i=0;i<n;i++){
		arr[i]=X[i];
		brr[i]=Y[i];
	}
	return func();
}

int updateX(int pos, int val) {	
	arr[pos]=val;
	return func();
}

int updateY(int pos, int val) {
	brr[pos]=val;
	return func();
}

• Subtask 1: 17 / 17
• Subtask 2: 0 / 17
• Subtask 3: 0 / 20
• Subtask 4: 0 / 23
• Subtask 5: 0 / 23