Submission #1209511

#	Time	Username	Problem	Language	Result	Execution time	Memory
1209511		Theo830	Kitchen (BOI19_kitchen)	C++20	20 / 100	147 ms	195244 KiB

kitchen

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll INF = 1e9+7;
const ll MOD = 998244353;
typedef pair<ll,ll> ii;
#define iii pair<ll,ii>
#define f(i,a,b) for(ll i = a;i < b;i++)
#define pb push_back
#define vll vector<ll>
#define F first
#define S second
#define all(x) (x).begin(), (x).end()
///I hope I will get uprating and don't make mistakes
///I will never stop programming
///sqrt(-1) Love C++
///Please don't hack me
///@TheofanisOrfanou Theo830
///Think different approaches (bs,dp,greedy,graphs,shortest paths,mst)
///Stay Calm
///Look for special cases
///Beware of overflow and array bounds
///Think the problem backwards
///Training
int main(void){
    ll n,m,k;
    cin>>n>>m>>k;
    ll a[n];
    ll ans = 1e18;
    ll cur = 0;
    f(i,0,n){
        cin>>a[i];
        cur += a[i];
        if(a[i] < 0){
            cout<<"Impossibe\n";
            return 0;
        }
    }
    ll b[m];
    ll sum = 0;
    f(i,0,m){
        cin>>b[i];
        sum += b[i];
    }
    ll dp[m+1][sum+1];
    f(i,0,m+1){
        f(j,1,sum+1){
            dp[i][j] = -1e18;
        }
    }
    dp[0][0] = 0;
    f(i,0,m){
        f(j,0,sum+1){
            dp[i+1][j] = dp[i][j];
        }
        f(j,0,sum+1){
            if(j + b[i] <= sum){
                dp[i+1][j + b[i]] = max(dp[i+1][j + b[i]],dp[i][j] + min(n,b[i]));
            }
        }
    }
    f(j,cur,sum+1){
        if(dp[m][j] >= n * k){
            cout<<j - cur<<"\n";
            return 0;
        }
    }
    cout<<"Impossible\n";
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 22
• Subtask 3: 20 / 20
• Subtask 4: 0 / 21
• Subtask 5: 0 / 28