|  | 5436 | P0138
  abs(x) | 6 | 66.667% | 
      
        |  | 5437 | P0139
  min(a, b) | 6 | 66.667% | 
      
        |  | 5438 | P0140
  max(a, b) | 6 | 66.667% | 
      
        |  | 5439 | P0141
  pow(a, b) | 7 | 57.143% | 
      
        |  | 5440 | P0142
  sqrt(x) | 5 | 80% | 
      
        |  | 5441 | P0143
  gcd(a, b) | 4 | 75% | 
      
        |  | 5442 | P0144
  lcm(a, b) | 6 | 50% | 
      
        |  | 5443 | P0145
  round(x) | 5 | 80% | 
      
        |  | 5444 | P0146
  ceil(x) | 9 | 44.444% | 
      
        |  | 5445 | P0147
  floor(x) | 6 | 66.667% | 
      
        |  | 5446 | P0148
  next_permutation(a.begin(), a.end()) | 3 | 66.667% | 
      
        |  | 5447 | P0149
  sort(a.begin(), a.end()) | 6 | 50% | 
      
        |  | 5448 | P0150
  sort(a.begin(), a.end(), cmp) | 5 | 60% | 
      
        |  | 5449 | P0151
  sort(a.begin(), a.end(), greater<int>()) | 5 | 60% | 
      
        |  | 5450 | P0152
  sort(v.begin(), v.end(), cmp2) | 10 | 20% | 
      
        |  | 5451 | P0153
  reverse(a.begin(), a.end()) | 7 | 42.857% | 
      
        |  | 5452 | P0154
  lower_bound(a.begin(), a.end(), t) | 7 | 28.571% | 
      
        |  | 5453 | P0155
  upper_bound(a.begin(), a.end(), t) | 12 | 16.667% | 
      
        |  | 5454 | P0156
  unique(a.begin(), a.end()) | 4 | 75% | 
      
        |  | 5455 | P0157
  __builtin_popcount(x) & lowbit(x) | 6 | 33.333% |