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https://github.com/Kiritow/OJ-Problems-Source.git
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24 lines
428 B
C++
24 lines
428 B
C++
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#include<stdio.h>
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int main()
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{
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int t,n,a,b;
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while(scanf("%d",&t)!=EOF)
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{
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while(t--)
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{
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scanf("%d",&n);
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if(n>=1&&n<=30)
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{
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a=1;
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for(b=1;b<=n;b++)
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{
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a=a*2;
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}
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a=a-1;
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printf("%d\n",a);
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}
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}
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}
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return 0;
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}
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