Submission #883681

#	Time	Username	Problem	Language	Result	Execution time	Memory
883681		Esgeer	Knapsack (NOI18_knapsack)	C++11	73 / 100	171 ms	262144 KiB

knapsack

#include <bits/stdc++.h>
using namespace std;
 
//#pragma GCC optimize("Ofast,O3,unroll-loops")
#define int long long
#define vi vector<int>
#define vvi vector<vi>
#define pii pair<int, int>
#define vpi vector<pii>
#define vvpi vector<vpi>
#define vb vector<bool>
#define vvb vector<vb>
#define endl "\n"
#define sp << " " <<
#define F(i, s, n) for(int i = s; i < n; i++)
#define pb push_back
#define fi first
#define se second
 
const int mod = 1e8;
 
int inf = LLONG_MAX >> 4;

int add(int x, int y) {
    return (x + y) % mod;
}
int mult(int x, int y) {
    return ((x % mod) * (y % mod)) % mod;
}

void solve() {
    int n, k;
    cin >> k >> n;
    vi v(n+1, 0), w(n+1, 0), amt(n+1, 0);
    F(i, 1, n+1) cin >> v[i] >> w[i] >> amt[i];

    vvi dp(n+1, vi(k+1, -inf));
    dp[0][0] = 0;
    F(i, 1, n+1) {
        F(j, 0, k+1) {
            F(hm, 0, amt[i] + 1) {
                if(w[i]*hm > j) break;
                dp[i][j] = max(dp[i][j], dp[i-1][j-w[i]*hm] + v[i]*hm);
            }
        }
    }
    int ans = -inf;
    F(i, 0, k+1) ans = max(ans, dp[n][i]);
    cout << ans << endl;
}
 
void setIO() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    #ifdef Local
        freopen("local.in", "r", stdin);
        freopen("local.out", "w", stdout);
    #else 
        //freopen("snakes.in","r",stdin);
        //freopen("snakes.out","w",stdout);
    #endif
}
signed main() {
    setIO();
    int t = 1;
    //cin >> t;
    while(t--) solve();
}

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