Submission #567414

#	Time	Username	Problem	Language	Result	Execution time	Memory
567414		birthdaycake	Kitchen (BOI19_kitchen)	C++17	29 / 100	20 ms	1052 KiB

kitchen

#include<bits/stdc++.h>
#define endl '\n'
#define int long long
#define mod 1000000007
#define boost ios_base::sync_with_stdio(false), cin.tie(NULL);
using namespace std;
 
 
 
 
int dp[200001],a[20001],b[200001];
 
signed main(){
    boost;
    
    
    
    
    int n,m,k,sum = 0; cin >> n >> m >>  k;
    for(int i = 0; i < n; i++){
        cin >> a[i]; sum += a[i];
    }
    
    if(k == 1){
        for(int j = 0; j < m; j++) cin >> b[j];
        
        dp[0] = 1;
        for(int i = 0; i < m; i++){
            for(int j = 90000; j >= b[i]; j--){
                dp[j] += dp[j - b[i]];
            }
        }
        for(int i = sum; i <= 90000; i++){
            if(dp[i]){
                cout << i - sum;
                return 0;
            }
        }
        cout << "Impossible";
        return 0;
    }
    
    
    for(int j = 0; j < m; j++) cin >> b[j];
    
    if(m < k){
        cout << "Impossible";
        return 0;
    }
    
    for(int i = 0; i < n; i++){
        if(a[i] < k){
            cout << "Impossible";
            return 0;
        }
    }
    
    
    
    int ans = 1e18;
    for(int i = 0; i < (1 << m); i++){
        int tot = 0, good = 1, xx = 0;
        for(int j = 0; j < m; j++){
            if(i & (1 << j)){
                xx += min(b[j],n);
                tot += b[j];
            }
        }
        if(xx == n * k){
            if(tot >= sum) ans = min(ans,tot - sum);
        }
        
    }
    if(ans == 1e18){
        cout << "Impossible";
        return 0;
    }
    cout << ans;
    return 0;
}

Compilation message (stderr)

kitchen.cpp: In function 'int main()':
kitchen.cpp:62:22: warning: unused variable 'good' [-Wunused-variable]
   62 |         int tot = 0, good = 1, xx = 0;
      |                      ^~~~

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