제출 #1275636

#제출 시각아이디문제언어결과실행 시간메모리
1275636almazKnapsack (NOI18_knapsack)C++20
73 / 100
1096 ms580 KiB
#include <bits/stdc++.h> using namespace std; int main() { ios::sync_with_stdio(false); cin.tie(nullptr); int S, N; cin >> S >> N; vector<long long> dp(S + 1, 0); for (int i = 0; i < N; i++) { long long V, W, K; cin >> V >> W >> K; if (K * W >= S) { // Unbounded knapsack (много предметов, больше чем вместимость) for (int w = W; w <= S; w++) { dp[w] = max(dp[w], dp[w - W] + V); } } else { // Binary splitting long long cnt = 1; while (K > 0) { long long take = min(cnt, K); long long val = take * V; long long wt = take * W; for (int w = S; w >= wt; w--) { dp[w] = max(dp[w], dp[w - wt] + val); } K -= take; cnt <<= 1; } } } cout << *max_element(dp.begin(), dp.end()) << "\n"; return 0; }
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