제출 #1183232

#제출 시각아이디문제언어결과실행 시간메모리
1183232iamhereforfunKnapsack (NOI18_knapsack)C++17
100 / 100
43 ms4560 KiB
// IamHereForFun // #include <bits/stdc++.h> using namespace std; #define LSOne(S) ((S) & -(S)) const int N = 2e3 + 5; const int M = 2e5 + 5; const int Q = 1e5 + 5; const int LG = 20; const int INF = 1e9; const int MOD = 1e9 + 7; const int B = 350; int s, n; long long dp[N], mx = 0; priority_queue<int> val[N]; void solve() { cin >> s >> n; for (int x = 0; x < n; x++) { int v, w, k; cin >> v >> w >> k; for (int y = 0; y < LG; y++) { if (k == 0) break; if (k < (1 << y)) { val[k * w].push(k * v); break; } else { if ((1 << y) * w > s) break; val[(1 << y) * w].push((1 << y) * v); k -= (1 << y); } } } memset(dp, 0, sizeof(dp)); for (int x = 1; x <= s; x++) { int cnt = x; while (cnt <= s && !val[x].empty()) { long long i = val[x].top(); // cout << i << " " << x << "\n"; val[x].pop(); for (int y = s; y >= cnt; y--) { dp[y] = max(dp[y], dp[y - x] + i); mx = max(dp[y], mx); } cnt += x; } } cout << mx; } signed main() { ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0); int t = 1; // cin >> t; for (int x = 1; x <= t; x++) { solve(); } return 0; }
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