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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main(){
  5.     int n;cin>>n;
  6.     vector<int>a(n),b(n),dp(n+1);
  7.  
  8.     dp[1]=0;
  9.     dp[2]=1;
  10.     dp[3]=1;
  11.     dp[4]=2;
  12.     for(int i=3;i<=n;i++){
  13.        if(i%7!=0){
  14.         dp[i]=1+min(dp[i-1],dp[i-2]);
  15.        }else{
  16.         dp[i]=1+dp[i/7];
  17.        }
  18.     }
  19.     cout<<dp[n]<<endl;
  20. }
Success #stdin #stdout 0.01s 5292KB
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https://ideone.com/oBDItE
language:
C++ (gcc 8.3)
created:
9 hours ago
visibility:
public

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