20 lines
303 B
C++
20 lines
303 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,i=5,count=0;
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cin>>n;
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while(n>0)
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{
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while(i>=1)
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{
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while(n-i>=0)
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{
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count++;
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n=n-i;
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}
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i--;
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}
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cout<<count;
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}
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}
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