13 lines
175 B
C++
13 lines
175 B
C++
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#include<bits/stdc++.h>
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using namespace std;
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int main()
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{
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int n,k;
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cin>>n>>k;
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while(k--)
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{
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if(n%10==0) n=n/10;
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else n=n-1;
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}
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cout<<n;
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}
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