Submission #1088641

#	Time	Username	Problem	Language	Result	Execution time	Memory
1088641		damamila	Knapsack (NOI18_knapsack)	C++14	100 / 100	43 ms	1700 KiB

knapsack

#include <bits/stdc++.h>

using namespace std;

//~ #define int long long

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);  
	int s, n;
	cin >> s >> n;
	vector<vector<pair<int, int>>> items(s+1);
	for (int i = 0; i < n; i++) {
		int v, w, k;
		cin >> v >> w >> k;
		items[w].push_back({v, k});
	}
	vector<int> dp(s+1, 0);
	for (int i = 1; i <= s; i++) {
		sort(items[i].rbegin(), items[i].rend());
		//~ cout << i << ": " << endl;
		int cnt = 0;
		int sz = s/i;
		for (int j = 0; j < items[i].size(); j++) {
			auto [v, anz] = items[i][j];
			while (cnt < sz && anz) {
				for (int k = s; k >= i; k--) {
					dp[k] = max(dp[k], dp[k-i]+v);
					//~ cout << "HERE: " << k << " " << dp[k] << endl;
				}
				cnt++;
				anz--;
			}
		}
	}
	cout << dp[s] << endl;
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:25:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |   for (int j = 0; j < items[i].size(); j++) {
      |                   ~~^~~~~~~~~~~~~~~~~
knapsack.cpp:26:9: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   26 |    auto [v, anz] = items[i][j];
      |         ^

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