1277A - Happy Birthday Polycarp - CodeForces Solution


implementation *1000

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Python Code:

import sys
input = lambda : sys.stdin.readline().strip()
'''
╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
╬╬        ▓▓     ▓▓      ╬╬
╬╬        ▓▓     ▓▓      ╬╬
╬╬        ▓▓█████▓▓      ╬╬
╬╬        ▓▓     ▓▓      ╬╬
╬╬        ▓▓     ▓▓      ╬╬
╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬╬
'''
for i in range(int(input())):
    n = input()
    x = len(n)
    y = (x-1)*9
    new_num = int("1"*x)
    z = int(n)//new_num
    print(z+y)

C++ Code:

#include<bits/stdc++.h>
using namespace std;
void solve(){
  
long long n;
cin>>n;
long long num=n;
int cnt=0;
long long dig=0;
while(n>0){
dig=n%10;
n=n/10;
cnt++;
}
long long digit=dig; 
long long ans=0;
if(cnt==1){
  cout<<dig<<endl;
  return;
}

 int count=cnt;
while(cnt>1){
  dig=dig*10+digit;
  cnt--;
}
if(num>=dig ){
  ans=9*(count-1)+digit;
  cout<<ans<<endl;
return;
}
else {
  ans=9*(count-1)+digit-1;
  cout<<ans<<endl;
return;
}


}



 








int main(){
  int t;
  cin>>t;
  while(t--){
  solve();

  }

}



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