Submission #866239

#	Time	Username	Problem	Language	Result	Execution time	Memory
866239		maks007	Knapsack (NOI18_knapsack)	C++14	49 / 100	1074 ms	600 KiB

knapsack

#include "bits/stdc++.h"

using namespace std;
//#define int long long
signed main () {
	int W, n;
	cin >> W >> n;
	vector <int> v, w, k;
	for(int i = 0; i < n; i ++) {
		int V, WW;
		cin >> V >> WW;
		v.push_back(V);
		w.push_back(WW);
		int K;
		cin >> K;
		k.push_back(K);
	}
	vector <int> dp(W+1, -1e9);
	dp[0] = 0;
	for(int i = 0; i < v.size(); i ++) {
		for(int j = W; j >= 0; j --) {
			for(int K = 1; K <= min(k[i], W/w[i]); K ++) {
				if(j-w[i]*K >= 0) dp[j] = max(dp[j-w[i]*K]+v[i]*K, dp[j]);
			}
		}
	}
	cout << *max_element(dp.begin(), dp.end());
	return 0;
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:20:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |  for(int i = 0; i < v.size(); i ++) {
      |                 ~~^~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 17 / 17
• Subtask 3: 20 / 20
• Subtask 4: 0 / 24
• Subtask 5: 0 / 27