Submission #763205

#	Time	Username	Problem	Language	Result	Execution time	Memory
763205		Alvamau	Knapsack (NOI18_knapsack)	C++14	0 / 100	4 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 val,cnt;
    friend bool operator < (item x,item y){ return x.val > y.val;}
};
int32_t main(){
    FASTIO;
    int m,n;
    cin >> m >> n;
    vector < vector < item > > vt(m+1);
    for (int i=1;i<=n;i++){
        int v,w,t;
        cin >> v >> w >> t;
        vt[w].push_back({v,t});
    }
    int i=1;
    for (int w=1;w<=m;w++,i++){
        sort(vt[w].begin(),vt[w].end());
        int cw=0,cv=0;
        for (int j=1;j<=m;j++)
            dp[i][j]=dp[i-1][j];
        for (auto f:vt[w]){
            if (cw>m) break;
            for (int k=1;k<=f.cnt;k++){
                cw+=w;
                cv+=f.val;
                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;
    return 0;
}

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