Submission #448816

#	Time	Username	Problem	Language	Result	Execution time	Memory
448816		julian33	Kitchen (BOI19_kitchen)	C++14	100 / 100	98 ms	1876 KiB

kitchen

#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {
    cerr<<vars<<" = ";
    string delim="";
    (...,(cerr<<delim<<values,delim=", "));
    cerr<<"\n";
}
#else
#define deb(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {}
#endif

#define pb push_back
#define sz(x) (int)(x.size())
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
template<typename T> inline void maxa(T& a,T b){a=max(a,b);}
template<typename T> inline void mina(T& a,T b){a=min(a,b);} 
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

const int mxN=2e5+5; //make sure this is right
const int mod=1e9+7;

int dp[mxN][2];

int main(){
    cin.sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    #ifdef LOCAL
        freopen("input.txt","r",stdin);
        freopen("output.txt","w",stdout);
    #endif

    int n,m,k; cin>>n>>m>>k;
    int tot=0; int bad=0;
    for(int i=0;i<n;i++){
        int a; cin>>a;
        if(a<k)
            bad=1;
        tot+=a;
    }
    if(bad){
        cout<<"Impossible\n";
        return 0;
    }
    memset(dp,-1,sizeof(dp));
    int lim=m<=15?tot+1000:2*tot;
    dp[0][1]=0;
    for(int i=0;i<m;i++){
        int b; cin>>b;
        for(int j=0;j<=lim;j++){
            if(j>=b && ~dp[j-b][(i%2)^1])
                dp[j][(i%2)]=dp[j-b][(i%2)^1]+min(n,b);
            maxa(dp[j][(i%2)],dp[j][(i%2)^1]);
        }
    }
    for(int i=tot;i<=lim;i++){
        if(dp[i][(m-1)%2]>=k*n){
            cout<<i-tot<<"\n";
            return 0;
        }
    }
    cout<<"Impossible\n";
}

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