Submission #1172363

#	Time	Username	Problem	Language	Result	Execution time	Memory
1172363		dbekarys	Knapsack (NOI18_knapsack)	C++20	Compilation error	0 ms	0 KiB

knapsack

#include <bits/stdc++.h>
using namespace std;
//vector<int>v[N];

int dp[2000][N];
signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie();
    
    int m,n;
    cin>> m>>n;
    int a[n+1],b[n+1];
    vector<int>v1,v2,k;
    k.push_back(0);
    for(int i=1,c;i<=n;i++){
        cin>> b[i]>>a[i]>>c;
        k.push_back(c);
        for(int j=0;j<c;j++){
        v1.push_back(a[i]),v2.push_back(b[i]);
        }
    }
    if(n == 1) {
        int s = m / a[1] ;
        if(s >= k[1]) {
            cout << b[1] * k[1] ;
        }
        else {
            cout << b[1] * s ;
        }
        return 0;
    }
    for(int i=1;i<=v1.size();i++){
        for(int j=1;j<=m;j++){
            dp[i][j]=dp[i-1][j];
            if(v1[i-1]<=j){
                dp[i][j]=max(dp[i][j],dp[i-1][j-v1[i-1]]+v2[i-1]);
            }
        }
    }
    cout<< dp[v1.size()][m];
}

Compilation message (stderr)

knapsack.cpp:5:14: error: 'N' was not declared in this scope
    5 | int dp[2000][N];
      |              ^
knapsack.cpp: In function 'int main()':
knapsack.cpp:35:13: error: 'dp' was not declared in this scope; did you mean 'dup'?
   35 |             dp[i][j]=dp[i-1][j];
      |             ^~
      |             dup
knapsack.cpp:41:12: error: 'dp' was not declared in this scope; did you mean 'dup'?
   41 |     cout<< dp[v1.size()][m];
      |            ^~
      |            dup