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  1. #include <stdio.h>
  2. int main(){
  3.  
  4. int n, sum;
  5. scanf("%d%d", &n, &sum);
  6.  
  7. int z = n-1;
  8.  
  9. char arr[n];
  10.  
  11. for(int i=0; i<n; i++){
  12.  
  13.     if(i==0){
  14.  
  15.     if(z*9>=sum) { arr[i]= 1 + '0'; sum -= 1; z--; }
  16.     else{
  17.         arr[i]= sum - z*9 + '0';
  18.         for(int k=1; k<n; k++){
  19.             arr[k]= 9 + '0';
  20.         }
  21.         puts(arr);
  22.         return 0;
  23.     }
  24.     }
  25.  
  26.     else if(i!=n-1){
  27.  
  28.         if(z*9>=sum) { arr[i]= 0 + '0'; z--; }
  29.         else{
  30.             arr[i]= sum - z*9 + '0';
  31.         for(int k=i+1; k<n; k++){
  32.             arr[k]= 9 + '0';
  33.         }
  34.         puts(arr);
  35.         return 0;
  36.         }
  37.     }
  38.  
  39.     else{
  40.         arr[n-1]= sum +'0';
  41.     }
  42.  
  43. }
  44.  
  45. puts(arr);
  46.  
  47.     return 0;
  48. }
Success #stdin #stdout 0s 5316KB
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https://ideone.com/yHke6e
language:
C (gcc 8.3)
created:
8 hours ago
visibility:
public

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