14 lines
181 B
C++
14 lines
181 B
C++
#include<cstdio>
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int n;
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bool isp(int n)
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{
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for(int i=2;i*i<=n;i++) if(n%i==0) return 0;
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return n>1;
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}
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int main()
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{
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scanf("%d",&n);
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printf("%s\n",isp(n)?"Yes":"No");
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return 0;
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}
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