Submission #1127444

#	Time	Username	Problem	Language	Result	Execution time	Memory
1127444		heisenberg	Knapsack (NOI18_knapsack)	C++20	Compilation error	0 ms	0 KiB

knapsack

#include<bits/stdc++.h>
using namespace std ;

void run_case() {
    int S , N ;
    cin >> S >> N ;
    vector<long long> weights , values ;
    for(int i = 0 ; i < N ; ++i) {
        long long w , v , k ;
        cin >> w >> v >> k ;
        while(k--) {
            weights.push_back(w) ;
            values.push_back(v) ;
        }
    }
    N = weights.size() ;
    vector<long long> dp(S + 1,0) ;
    for(int i = N - 1 ; i >= 0 ; --i) {
        for(int capacity = S ; capacity >= 0 ; --capacity) {
            dp[capacity] = dp[capacity] ;
            if(capacity >= weights[i])
                dp[capacity] = max(dp[capacity - weights[i]] + values[i],dp[capacity]) ;
        }
    }
    cout << dp[W] <<' ' ;
}

signed main() {
    run_case() ;
    return 0 ;
}

Compilation message (stderr)

knapsack.cpp: In function 'void run_case()':
knapsack.cpp:25:16: error: 'W' was not declared in this scope
   25 |     cout << dp[W] <<' ' ;
      |                ^