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https://github.com/Kiritow/OJ-Problems-Source.git
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25 lines
365 B
C++
25 lines
365 B
C++
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#include<stdio.h>
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int main()
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{
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int dfs(int n,int k);
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int t;
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int n,k;
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scanf("%d",&t);
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while(t--)
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{
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scanf("%d%d",&n,&k);
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printf("%d\n",dfs(n,k));
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}
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return 0;
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}
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int dfs(int n,int k)
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{
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int num;
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if(n==k)
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{
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return k;
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}
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num=dfs(n-n/k,k);
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return ((num-1)/(k-1)+num);
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}
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