Submission #516991

#	Time	Username	Problem	Language	Result	Execution time	Memory
516991		DiTenix	Knapsack (NOI18_knapsack)	C++17	73 / 100	1055 ms	4004 KiB

knapsack

#define eb emplace_back
#define pb push_back
#define pii pair<int,int>
#define sz(x) int((x).size())
#define ALL(x) (x).begin(),(x).end()
#define ln cout << '\n'
#define REP(i, a) for (int i = 0; i < int(a); i++)
#define FOR(i, a) for (int i = 1; i <= int(a); i++)
#define MEM(a,b) memset((a),(b),sizeof(a))
const int INF = 0x3f3f3f3f, MOD = 1e9 + 7;
using namespace std;
#include <bits/stdc++.h>
using ll = long long;
using vi = vector<int>;
template<typename T> void rd(vector<T> &a) {for (auto &ele : a) cin >> ele;}
template<typename T> void writeln(vector<T> &a) {for (auto &ele : a) cout << ele << ' '; cout << "\n";}
#if __cplusplus > 201402L
template<typename... Args> void rd(Args&... args) {((cin >> args), ...);}
template<typename... Args> void write(Args... args) {((cout << args << " "), ...);}
template<typename... Args> void writeln(Args... args) {((cout << args << " "), ...); cout << "\n";}
#endif
const int maxn = 1e6 + 5;

ll v[maxn], w[maxn], k[maxn];
ll dp[2][2005];

signed main()
{
/*#ifndef ONLINE_JUDGE
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif*/
    cin.tie(0); cout.tie(0);
    ios::sync_with_stdio(false);
//    int t;cin >> t;while(t--) solve();
    int n, S;
    cin >> S >> n;
    FOR(i, n) {
        cin >> v[i] >> w[i] >> k[i];
    }
    for (int i = 1; i <= n; ++i) {

        for (int j = 1; j <= S; ++j) {
            dp[1][j] = dp[0][j];
            for (int c = 1; c * w[i] <= j && c <= k[i]; ++c) {
                dp[1][j] = max(dp[1][j], dp[0][j - c * w[i]] + c * v[i]);
            }
        }
        swap(dp[1], dp[0]);
    }
    ll res = 0;
    for (int i = 0; i <= S; ++i) {
        res = max(res, dp[0][i]);
    }
    writeln(res);
    return 0;
}

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