Submission #763199

#	Time	Username	Problem	Language	Result	Execution time	Memory
763199		Alvamau	Knapsack (NOI18_knapsack)	C++14	0 / 100	5 ms	9940 KiB

knapsack

//https://oj.uz/problem/view/NOI18_knapsack

#include <bits/stdc++.h>
using namespace std;
#define FASTIO ios_base::sync_with_stdio(false); cin.tie(NULL)

typedef long long ll;

const int MAXN = 2005;

int dp[MAXN][MAXN];

struct item{
    int v,cnt;
    friend bool operator < (item a, item b){
        return a.v>b.v;
    }
};

int main(){
    FASTIO;
    int m,n;
    cin>>m>>n;
    vector<vector<item>> a(m+1);
    for(int i=1;i<=n;i++){
        int v,w,t;
        cin>>v>>w>>t;
        a[w].push_back({v,t});
    }
    int i=1;
    for(int w=1;w<=m;w++,i++){
        sort(a[w].begin(),a[w].end());
        int cw=0,cv=0;
        for(int j=1;j<=m;j++)
            dp[i][j]=dp[i-1][j];

        for(auto obj:a[w]){
            if(cw>m)
                break;

            for(int k=1;k<=obj.cnt;k++){
                cw+=w;
                cv+=obj.v;
                if(cw>m)
                    break;
                for(int j=cw;j<=m;j++)
                    dp[i][j] = max(dp[i][j], dp[i-1][j-cw]+cv);
            }
        }   
    }
    int ans=0;
    for(int j=1;j<=m;j++)
        ans=max(ans,dp[i][j]);
    cout<<ans<<"\n";
}

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