Submission #1070507

#	Time	Username	Problem	Language	Result	Execution time	Memory
1070507		ndquang	Knapsack (NOI18_knapsack)	C++17	73 / 100	1096 ms	596 KiB

knapsack

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

/** Author: Nguyen Duy Quang **/

#define test int T; cin >> T; while(T--)
#define all(x) (x).begin(), (x).end()
#define Bit(x, y) ((x >> y) & 1)
#define int long long
#define pb push_back
#define fi first
#define sc second
#define submitFile(Task) freopen(Task".inp", "r", stdin); freopen(Task".out", "w", stdout);

using pii = pair<int, int>;
using ull = unsigned long long;
const int INF = (int)1e18, MOD1 = (int)1e9 + 7, MOD2 = (int)998244353;
template<class X, class Y> void maximize(X &a, const Y &b) { a = (a < b) ? b : a; }
template<class X, class Y> void minimize(X &a, const Y &b) { a = (a > b) ? b : a; }
template<class T> void add(T& a, T b) { a += b; if(a >= MOD1) a -= MOD1; }
template<class T> void sub(T& a, T b) { a -= b; if(a <= 0) a += MOD1; }
template<class T> T Abs(const T& a) { return (a < 0 ? -a : a); }

mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
int rand(int l, int r) { return l + rng() % (r - l + 1); }
void sinhTest(int itest) { ofstream cout(("test" + to_string(itest) + ".inp").c_str()); }
void solveTest(int itest) {
    ifstream cin(("test" + to_string(itest) + ".inp").c_str());
    ofstream cout(("test" + to_string(itest) + ".out").c_str());
}

///END OF TEMPLATE

signed main() {
    cin.tie(0)->ios_base::sync_with_stdio(0);
    int s, n; cin >> s >> n;
    vector<int> dp(s + 1, 0);
    for(int i = 0; i < n; i++) {
        int v, w, k; cin >> v >> w >> k;
        for(int j = 1; k > 0; j <<= 1) {
            int num = min(j, k);
            k -= num;
            for(int x = s; x >= num * w; x--) maximize(dp[x], dp[x - num * w] + num * v);
        }
    }
    int ans = 0;
    for(int i = 0; i <= s; i++) maximize(ans, dp[i]);
    cout << ans;
    return 0;
}

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