Submission #861323

#	Time	Username	Problem	Language	Result	Execution time	Memory
861323		anarch_y	Knapsack (NOI18_knapsack)	C++17	73 / 100	223 ms	262144 KiB

knapsack

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define all(x) begin(x), end(x)
#define pb push_back

const int mod = 1e9+7;

int main(){
    ios::sync_with_stdio(false);
	cin.tie(nullptr);

    int S, N; cin >> S >> N;
    vector<int> V(N+1, 0), W(N+1, 0), K(N+1, 0);
    for(int i=1; i<=N; i++){
        cin >> V[i] >> W[i] >> K[i];
        K[i] = min(K[i], S/W[i]);
    }

    int dp[N+1][S+1] = {};
    for(int i=1; i<=N; i++){
        for(int j=1; j<=S; j++){
            dp[i][j] = dp[i-1][j];
            for(int k=1; k<=K[i]; k++){
                int w = k*W[i];
                if(j>=w){
                    dp[i][j] = max(dp[i][j], dp[i-1][j-w]+k*V[i]);
                }
            }
        }
    }
    cout << dp[N][S];

}    

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