Submission #976642

#	Time	Username	Problem	Language	Result	Execution time	Memory
976642		vjudge1	Knapsack (NOI18_knapsack)	C++17	Compilation error	0 ms	0 KiB

knapsack

#include <iostream>
using namespace std;

struct Kue {
    long long value, weight, stock;
};

int main() {
    int s, n;
    long long ans = 0;
    cin >> s >> n;
    Kue kue[n];
    for (int i = 0; i < n; i++) {
        cin >> kue[i].value >> kue[i].weight >> kue[i].stock;
    }
    
    sort(kue, kue + n, [](const Kue &a, const Kue &b) {
        return a.value * b.weight > b.value * a.weight;
    });

    int i = 0, k;
    for (int i = 0; i < n; i++) {
        if (kue[i].weight > s) continue;
        k = min(s / kue[i].weight, kue[i].stock);
        ans += k * kue[i].value;
        s -= k * kue[i].weight;
    }
    cout << ans;
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:17:5: error: 'sort' was not declared in this scope; did you mean 'qsort'?
   17 |     sort(kue, kue + n, [](const Kue &a, const Kue &b) {
      |     ^~~~
      |     qsort
knapsack.cpp:21:9: warning: unused variable 'i' [-Wunused-variable]
   21 |     int i = 0, k;
      |         ^