Submission #1193690

#	Time	Username	Problem	Language	Result	Execution time	Memory
1193690		SulA	Knapsack (NOI18_knapsack)	C++20	73 / 100	1087 ms	528 KiB

knapsack

#include <bits/stdc++.h>
#define all(a) a.begin(), a.end()
#define popcount(x) __builtin_popcountll(x)
using namespace std;
using namespace chrono;

long long dp[2001];

void add(long long val, long long cost) {
    for (int i = 2000; i >= cost; i--)
        dp[i] = max(dp[i], dp[i - cost] + val);
}

signed main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);

    int n,s; cin >> s >> n;
    for (int i = 0; i < n; i++) {
        long long val, cost, k; cin >> val >> cost >> k;
        int b = 1;
        while (k >= b) {
            add(val*b, cost*b);
            k -= b;
            b <<= 1;
        }
        add(val*k, cost*k);
    }
    cout << dp[s];
}

• Subtask 1: 12 / 12
• Subtask 2: 17 / 17
• Subtask 3: 20 / 20
• Subtask 4: 24 / 24
• Subtask 5: 0 / 27