Submission #756347

#	Time	Username	Problem	Language	Result	Execution time	Memory
756347		asdasdqwer	Knapsack (NOI18_knapsack)	C++14	Compilation error	0 ms	0 KiB

knapsack

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

int main() {
    int s, n;

    cin >> s >> n;
    vector<int64_t> dp(s+1, 0);
    vector<pair<int64_t, int64_t>> items;

    for (int i = 0; i < n; i++) {
        int64_t v, w, k;
        cin >> v >> w >> k;

        k = min((s / k) + 1, k);
        for (int j = 0; j < k; j++) {
            items.push_back(make_pair(v, w));
        }
    }

    sort(items.begin(), items.end());

    int s = items.size();
    for (int i = 0; i < s; i++) {
        for (int j = n; j > 0; j--) {
            if ((j - items[i].second > -1) && (dp[j - items[i].second] + items[i].first > dp[j])) {
                dp[j] = dp[j - items[i].second] + items[i].first;
            }
        }
    }

    cout << dp[n] << "\n";
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:23:9: error: redeclaration of 'int s'
   23 |     int s = items.size();
      |         ^
knapsack.cpp:5:9: note: 'int s' previously declared here
    5 |     int s, n;
      |         ^