제출 #659008

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
659008		kuderRahul	Knapsack (NOI18_knapsack)	C++14	0 / 100	1 ms	468 KiB

knapsack

#include<bits/stdc++.h>
using namespace std;
#define int long long int
#define v vector
const int N = 1e6 + 111, mod = 1e9 + 7;
void solve() {
  int n,s,a,b,c;
  cin>>s>>n;
  if(n==1){
    cin>>a>>b>>c;
    cout<<min(s/b,c)*a<<'\n';
    return;
  }
  v<int>weight(n+1),value(n+1),itemCount(n+1,1);
  for(int i=0;i<n;i++)cin>>value[i]>>weight[i]>>itemCount[i];
  v<v<int>>dp(n+11,v<int>(s+11,0));
  for(int i=0;i<=n;i++)dp[0][i]=0;

  for(int i=1;i<=n;i++)
    for(int j=1;j<=s;j++)
      for(int x=0;x<=itemCount[i-1];x++)
        if(j-x*weight[i-1]>=0)dp[i][j]=max(dp[i][j],value[i-1]*x+dp[i-1][j-x*weight[i-1]]);
  cout<<dp[n][s];
}

signed main() {
  freopen("input.txt", "r", stdin);
  freopen("output.txt", "w", stdout);
  // int t;scanf("%lld",&t);while(t--)
  solve();
}

컴파일 시 표준 에러 (stderr) 메시지

knapsack.cpp: In function 'int main()':
knapsack.cpp:27:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |   freopen("input.txt", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
knapsack.cpp:28:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |   freopen("output.txt", "w", stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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