Submission #905090

#	Time	Username	Problem	Language	Result	Execution time	Memory
905090		ByeWorld	Knapsack (NOI18_knapsack)	C++14	12 / 100	1 ms	2396 KiB

knapsack

#include <bits/stdc++.h>
#pragma GCC optimize("Ofast,unroll-loops")
#define bupol __builtin_popcount
#define int long long 
#define ll long long
#define ld long double
#define fi first
#define se second
#define pb push_back
#define lf (id<<1)
#define rg ((id<<1)|1)
#define md ((l+r)>>1)
using namespace std;
const int MAXN = 1e5+10;
const int MAXK = 2010;
const int LOG = 20;
const int MOD = 1e9+7;
const int SQRT = 520;
const int INF = 1e18;
typedef pair<int,int> pii;
typedef pair<int,pii> ipii;

int n, s;
int v[MAXN], w[MAXN], k[MAXN];
int dp[MAXN][MAXK];

signed main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin >> s >> n;
    for(int i=1; i<=n; i++){
        cin >> v[i] >> w[i] >> k[i];
    }
    for(int j=0; j<=s; j++) dp[1][j] = -INF;

    for(int i=1; i<=n; i++){
        for(int j=0; j<=s; j++){ // max value kalo udh di i, isinya j
            dp[i%2][j] = dp[(i-1)%2][j];

            for(int x=1; x<=min(k[i], j/w[i]); x++){
                dp[i%2][j] = max(dp[i%2][j], dp[(i-1)%2][j - x*w[i]] + x*v[i]);
            }
        }
        // for(int j=0; j<w[i]; j++){ // x % w[i] == j
        //     int cnt = 0;
        //     for(int x=1; x<=s/w[i]+1; x++){
        //         int num = w[i]*x+j;
        //         if(num > s) break;
        //         dp[i][]
        //     }
        //     if(j >= w[i]){
        //         dp[i][j] = max(dp[i][j], dp[i-1][j-w[i]] + v[i]);
        //     }
        // }
    }

    int mx = -INF;
    for(int i=0; i<=s; i++) mx = max(mx, dp[n][i]);
    cout << mx << '\n';
}

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