Submission #1043835

#	Time	Username	Problem	Language	Result	Execution time	Memory
1043835		vanea	Knapsack (NOI18_knapsack)	C++14	100 / 100	40 ms	3240 KiB

knapsack

#include <bits/stdc++.h>
using namespace std;
using ll = long long;

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int s, n;
    cin >> s >> n;
    vector<array<ll, 3>> v(n);
    for(int i = 0; i < n; i++) {
        cin >> v[i][0] >> v[i][1] >> v[i][2];
    }
    sort(v.rbegin(), v.rend());
    vector<array<ll, 2>> a;
    map<int, int> st;
    for(auto [v, w, k] : v) {
        while(st[w]+w <= s && k) {
            --k;
            st[w]+=w;
            a.push_back({v, w});
        }
    }
    vector<ll> dp(s+1);
    for(auto [v, w] : a) {
        for(int x = s-w; x >= 0; x--) {
            dp[x+w] = max(dp[x+w], dp[x]+v);
        }
    }
    ll ans = 0;
    for(int i = 0; i <= s; i++) {
        ans = max(ans, dp[i]);
    }
    cout << ans;
    return 0;
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:18:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   18 |     for(auto [v, w, k] : v) {
      |              ^
knapsack.cpp:26:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   26 |     for(auto [v, w] : a) {
      |              ^

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