Submission #1235058

#	Time	Username	Problem	Language	Result	Execution time	Memory
1235058		stanirina	비스킷 담기 (IOI20_biscuits)	C++20	0 / 100	1094 ms	484 KiB

biscuits

#include "biscuits.h"
#include<bits/stdc++.h>
#define int long long

using namespace std;

long long count_tastiness(long long x, vector<long long> a) {
    int n=0ll;
    int ans=0ll;
    int k=a.size();
    vector<int> potrebno(k+1,0ll);
    for(int i=0ll;i<k;i++)n+=a[i]*(1ll<<i);
    for(int i=0ll;i<n/x+2ll;i++){
        for(int j=k;j>=0;j--){
            if(i&(1ll<<j))potrebno[j]=x;
            else potrebno[j]=0ll;
        }

        bool ok=true;
        if(potrebno[k]==x)potrebno[k-1ll]+=2ll*x;
        for(int j=k-1ll;j>0ll;j--){
                if(potrebno[j]<0ll || potrebno[j]>1000000000000000004ll){
                    ok=false;
                    break;
                }
                potrebno[j-1ll]+=2ll*max(0ll,potrebno[j]-a[j]);
                if(potrebno[j-1ll]<0ll || potrebno[j-1]>1000000000000000004ll){
                    ok=false;
                    break;
                }
        }
        if(!ok)continue;
        //for(int j=0;j<k+1;j++)cout<<potrebno[j]<<' ';
        //cout<<endl;
    //cout<<i<<endl;
        if(potrebno[0ll]<=a[0ll]){ans++;//cout<<i<<endl;
        }
    }

	return ans;
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 12
• Subtask 3: 0 / 21
• Subtask 4: 0 / 35
• Subtask 5: 0 / 23