제출 #659959

#제출 시각아이디문제언어결과실행 시간메모리
659959chanhchuong123Knapsack (NOI18_knapsack)C++14
100 / 100
60 ms3756 KiB
#include <bits/stdc++.h> using namespace std; #define task "C" #define fi first #define se second #define all(x) (x).begin(), (x).end() #define rall(x) (x).rbegin(), (x).rend() template <typename T1, typename T2> bool mini(T1 &a, T2 b) { if (a > b) {a = b; return true;} return false; } template <typename T1, typename T2> bool maxi(T1 &a, T2 b) { if (a < b) {a = b; return true;} return false; } const int N = 2020; int s, n; int dp[N]; vector<int> a[N]; vector<pair<int, int>> V[N]; main() { ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); cin >> s >> n; for (int i = 1; i <= n; i++) { int v, w, k; cin >> v >> w >> k; V[w].push_back({v, k}); } for (int i = 1; i <= s; i++) { int LIM = s / i; sort(all(V[i])); while (V[i].size() && LIM > 0) { if (V[i].back().se > 0) { a[i].push_back(V[i].back().fi); V[i].back().se--; LIM--; } else V[i].pop_back(); } } for (int i = 1; i <= s; i++) for (int j: a[i]) { for (int k = s; k >= i; k--) maxi(dp[k], dp[k - i] + j); } cout << dp[s]; }

컴파일 시 표준 에러 (stderr) 메시지

knapsack.cpp:22:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   22 | main() {
      | ^~~~
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