제출 #1266226

#제출 시각아이디문제언어결과실행 시간메모리
1266226sathegoodkidKnapsack (NOI18_knapsack)C++20
100 / 100
73 ms3656 KiB
#include <bits/stdc++.h> using namespace std; #define ll long long ll MOD = 1e9 +7; int MAX_C = 1e8+1; int main(){ int s,n; cin >> s >> n; vector <int> w(n); vector <ll> v(n); vector <ll> k(n); vector <vector<pair<int,int>>> by_weight(s+1); for(int i = 0 ; i < n ;i++){ cin >> v[i] >> w[i] >> k[i]; by_weight[w[i]].push_back({v[i],k[i]}); } vector <ll> dp(s+1,0); for(int i = 1; i <=s ; i++){ if(by_weight[i].size() != 0){ sort(by_weight[i].begin(),by_weight[i].end(), [](pair<int,int> &a , pair <int,int> &b){ return a.first > b.first; }); } } for(int i = 1 ; i <= s ; i++){ if(by_weight[i].size() == 0) continue; int total = s/i; int a = 0; while(a < by_weight[i].size() && total > 0){ ll check = min(total,by_weight[i][a].second); for(int j = s ; j >= i ; j--){ for(int x = 1; x <= check ; x++){ if(j < x*i) break; dp[j] = max(dp[j],dp[j-x*i] + x*by_weight[i][a].first); } } total -= check; a++; }; } cout << dp[s] << endl; }
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