Submission #780358

#	Time	Username	Problem	Language	Result	Execution time	Memory
780358		christinelynn	Knapsack (NOI18_knapsack)	C++17	37 / 100	14 ms	11092 KiB

knapsack

#include<bits/stdc++.h>
#define ll long long
#define fi first
#define sec second
#define pb push_back
#define pqueue priority_queue
#define int long long
#define pii pair<int,int>
#define supercepat ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(0);
using namespace std;
int tc,ans=0,n,t;
int l[100005];
int e[100005];
int k[100005];
int memo[1005][12][2005];
bool vis[1005][12][2005];
int dp(int idx,int r,int eg){
  if(vis[idx][r][eg]) return memo[idx][r][eg];
  vis[idx][r][eg]=1;
  if(idx==n+1) return 0;
  if(eg==0) return 0;
  if(r>0&&eg>=e[idx]){
    memo[idx][r][eg]=max(dp(idx+1,k[idx+1],eg-e[idx])+l[idx],dp(idx,r-1,eg-e[idx])+l[idx]);
  }
  memo[idx][r][eg]=max(memo[idx][r][eg],dp(idx+1,k[idx+1],eg));
  return memo[idx][r][eg];
}
main(){
  supercepat;
  cin>>t>>n;
  for(int i=1;i<=n;i++){
    cin>>l[i]>>e[i]>>k[i];
  }
  cout<<dp(1,k[n],t)<<endl;
}

Compilation message (stderr)

knapsack.cpp:28:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   28 | main(){
      | ^~~~

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