#include<bits/stdc++.h> #define ll long long #define ld long double #define endl '\n' using namespace std; const ll MOD = 1e9+7; void setup(){ if(fopen("input.INP", "r")){ freopen("input.INP", "r", stdin); freopen("output.OUT", "w", stdout); } ios::sync_with_stdio(0); cin.tie(0); cout.tie(0); } int main(){ setup(); int s,n; cin>>s>>n; vector<ll> dp(s+1,0); for(int i=1;i<=n;i++){ ll v,w,k; cin>>v>>w>>k; k=min(k,(ll)s/w); for(ll t=1;k>0;t*=2){ ll take=min(t,k); ll wt=take*w; ll val=take*v; for(int j=s;j>=wt;j--) dp[j]=max(dp[j],dp[j-wt]+val); k-=take; } } cout<<*max_element(dp.begin(),dp.end()); return 0; }

knapsack.cpp: In function 'void setup()':
knapsack.cpp:11:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |         freopen("input.INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
knapsack.cpp:12:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |         freopen("output.OUT", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~