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https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
32 lines
492 B
C++
32 lines
492 B
C++
#include<stdio.h>
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#define LL long long
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LL fun(LL m)
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{
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LL res=m;
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for(LL i=2;i*i<=m;i++)
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{
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if(m%i==0)
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{
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res=(res*(i-1))/i;
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while(m%i==0)
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{
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m/=i;
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}
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}
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}
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if(m>1) res=(res*(m-1))/m;
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return res;
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}
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int main()
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{
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LL n;
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int T;
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scanf ("%d",&T);
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while(T--)
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{
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scanf("%lld",&n);
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printf("%lld\n",fun(n+1));
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}
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return 0;
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}
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