Submission #1091504

#	Time	Username	Problem	Language	Result	Execution time	Memory
1091504		diponkinu	Knapsack (NOI18_knapsack)	C++14	100 / 100	84 ms	4908 KiB

knapsack

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

#define int long long
const int T = 2005;
vector<pair<int,int>> a[T];
int dp[T];
signed main(){
	// freopen("feast.in", "r", stdin);
	// freopen("feast.out", "w", stdout);
	int n,s;

	cin >> s >> n;
	for(int i = 0; i < n; i++){
		int v,w,k;
		cin >> v >> w >> k;
		a[w].push_back({v,k});
	}
	for(int i = 1; i <= T; i++ ){
//        if(a[i].size()<1)continue;
		sort(a[i].rbegin(), a[i].rend() );
//        cout << a[i][0].first << " ";
		int p = 0;
		for(int j = 0; j < s/i; j++){
			if(p>=a[i].size())break;
			int tempvalue = a[i][p].first;
			for(int o = s; o >= 0; o--){
				if(o+i <= s)dp[o+i] = max(dp[o+i],dp[o] + tempvalue);
			}
			a[i][p].second--;
			if(a[i][p].second == 0)p++;
		}
	}
	cout << dp[s];
	return 0;
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:25:8: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |    if(p>=a[i].size())break;
      |       ~^~~~~~~~~~~~~

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