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  1. #include <stdio.h>
  2. #include <string.h>
  3. #include <math.h>
  4. #include <stdlib.h>
  5.  
  6. int main() {
  7.     long long  int r,c,num;
  8.     scanf("%lld%lld",&r,&c);
  9.     if(r%2 == 0)
  10.         {
  11.         num =   10*((r/2)-1)+1;
  12.         num = num + 2*(c-1);
  13.     }
  14.     else
  15.         {
  16.         num =   10*(r/2);
  17.         num = num + 2*(c-1);        
  18.     }
  19.     printf("%lld\n",num);
  20.     return 0;
  21. }
  22.  
Success #stdin #stdout 0s 2056KB
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https://ideone.com/cp30GN
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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