Submission #961908

#	Time	Username	Problem	Language	Result	Execution time	Memory
961908		Bee_R	Knapsack (NOI18_knapsack)	C++17	73 / 100	122 ms	262144 KiB

knapsack

#include <bits/stdc++.h>

#define f cin
#define g cout

using namespace std;
/*ifstream f("knap.in");
ofstream g("knap.out");*/

vector<vector<int>> used;
vector<int> dp, weight, value;

int s, n, result;
int main(){
	f>>s>>n;
	used.resize(s+1,vector<int>(n+1,0));
	weight.resize(n+1);
	value.resize(n+1);
	for(int i=1;i<=n;i++){
		f>>value[i]>>weight[i]>>used[0][i];
	}
	dp.resize(s+1,0);
	for(int i=1;i<=s;i++){
		int mx=0, mxv=0;
		for(int j=1;j<=n;j++){
			int k=i-weight[j];
			if(k>=0 && dp[k]+value[j]>mxv && used[k][j]>0){
				mx=j;
				mxv=dp[k]+value[j];
			}
		}
		int k=i-weight[mx];
		for(int j=1;j<=n;j++)
			if(j==mx)
				used[i][j]=used[k][j]-1;
			else
				used[i][j]=used[k][j];
		dp[i]=mxv;
		if(mxv>result)
			result=mxv;
	}
	g<<result<<'\n';
	return 0;
}

• Subtask 1: 12 / 12
• Subtask 2: 17 / 17
• Subtask 3: 20 / 20
• Subtask 4: 24 / 24
• Subtask 5: 0 / 27