Submission #1195956

#	Time	Username	Problem	Language	Result	Execution time	Memory
1195956		osheesh	Knapsack (NOI18_knapsack)	C++20	73 / 100	1096 ms	440 KiB

knapsack

#include <bits/stdc++.h>
#define en '\n'
#define sp ' '
#define ll long long
#define pii pair<int, int>
#define piii pair<int, pair<int, int>>
#define maxx(a,b) a=max(a,b)
#define minn(a,b) a=min(a,b)
#define st first
#define nd second
using namespace std;

const int N=1e5+5;
ll dp[2005];
// int v[N],w[N],k[N];

int main(){ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int wei,n,v,w,k;
    scanf("%d%d",&wei,&n);
    // for(int i=1;i<=n;i++)  cin>>v[i]>>w[i]>>k[i];
    for(int i=1;i<=n;i++){
        scanf("%d%d%d",&v,&w,&k);
        // int tmp=min(k[i],wei/w[i]);
        int tmp=min(k,wei/w);
        for(int j=1;tmp;j<<=1){
            int cnt=min(j,tmp);
            ll nv=1LL*v*cnt,nw=1LL*w*cnt;
            for(int curr=wei;curr>=nw;curr--) maxx(dp[curr],dp[curr-nw]+nv);
            tmp-=cnt;
        }
    }
    printf("%lld",dp[wei]);
    return 0;
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:19:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   19 |     scanf("%d%d",&wei,&n);
      |     ~~~~~^~~~~~~~~~~~~~~~
knapsack.cpp:22:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |         scanf("%d%d%d",&v,&w,&k);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~

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