mirror of
https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
40 lines
722 B
C++
40 lines
722 B
C++
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#include<iostream>
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#include<cstring>
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using namespace std;
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const int N=5011;
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int flag[N];
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void init()
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{
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int i,l,j;
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int a,b;
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memset(flag,0,sizeof(flag));
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for(i=1;i<=5000;i++)
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{
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for(l=1;l<=1000;l++)
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{
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for(j=1;j<=1000;j++)
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{
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a=l*l*j+1;
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b=l*l+j;
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if(a%i==0 && b%i) flag[i]=1;
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if(flag[i]) break;
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}
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if(flag[i]) break;
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}
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}
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}
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int main()
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{
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init();
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int T;
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int n;
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cin>>T;
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while(T--)
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{
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cin>>n;
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if(flag[n]) cout<<"NO"<<endl;
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else cout<<"YES"<<endl;
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}
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return 0;
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}
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