Submission #531099

#	Time	Username	Problem	Language	Result	Execution time	Memory
531099		mihh	Knapsack (NOI18_knapsack)	C++17	0 / 100	425 ms	268 KiB

knapsack

#include <bits/stdc++.h>
#define db(x) cerr << #x <<":"<<x<<"  "
using namespace std;

const int INF=1e9, MOD=1e9+7;
// const int N=1e5+2;

int main(){
#ifndef ONLINE_JUDGE
    freopen("frog.in", "r", stdin);
    freopen("frog.out", "w", stdout);
#endif
    int n, kg; cin>>kg>>n;
    vector<vector<int>> bst(n+1,vector<int>(kg+1,0));
    for(int i=1;i<=n;++i){
        int v,w,k;
        cin>>v>>w>>k;
        for(int s=0;s<=kg;++s){
            for(int nr=0; nr<=k and s-nr*w>=0; ++nr)
                bst[i][s]=max(bst[i-1][s-nr*w]+nr*v, bst[i][s]);
        }
    }
    int ans=0;
    for(int s=1;s<=kg;++s)
        ans=max(ans, bst[n][s]);
    cout<<ans;
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:10:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   10 |     freopen("frog.in", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
knapsack.cpp:11:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |     freopen("frog.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

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