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https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
19 lines
282 B
C++
19 lines
282 B
C++
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#include<stdio.h>
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int gcd(int x,int y)
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{
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return y==0?x:gcd(y,x%y);
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}
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int main()
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{
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int a,b,c,t;
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scanf("%d",&t);
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while(t--)
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{
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scanf("%d%d",&a,&b);
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c=b+b;
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while(gcd(a,c)!=b)
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c+=b;
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printf("%d\n",c);
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}
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}
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