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  1. #pragma GCC optimize ("Ofast")
  2. #include<bits/stdc++.h>
  3. using namespace std;
  4. #define main dummy_main
  5. int main(){
  6.   return 0;
  7. }
  8. #undef main
  9. class UndergroundSystem{
  10.   public:
  11.   int sn;
  12.   map<string,int> sID;
  13.   map<int,int> p2s;
  14.   map<int,int> p2t;
  15.   map<pair<int,int>,double> tm;
  16.   map<pair<int,int>,double> tot;
  17.   UndergroundSystem(){
  18.     sn = 0;
  19.   }
  20.   int stationID(string stationName){
  21.     if(sID.count(stationName)){
  22.       return sID[stationName];
  23.     }
  24.     return sID[stationName] = sn++;
  25.   }
  26.   void checkIn(int id, string stationName, int t){
  27.     p2s[id] = stationID(stationName);
  28.     p2t[id] = t;
  29.   }
  30.   void checkOut(int id, string stationName, int t){
  31.     int x = p2s[id];
  32.     int y = stationID(stationName);
  33.     tm[make_pair(x,y)] += 1;
  34.     tot[make_pair(x,y)] += t - p2t[id];
  35.   }
  36.   double getAverageTime(string startStation, string endStation){
  37.     int x = stationID(startStation);
  38.     int y = stationID(endStation);
  39.     return tot[make_pair(x,y)] / tm[make_pair(x,y)];
  40.   }
  41. }
  42. ;
  43. // cLay varsion 20200325-1
  44.  
  45. // --- original code ---
  46. // #define main dummy_main
  47. // {}
  48. // #undef main
  49. // 
  50. // class UndergroundSystem {
  51. // public:
  52. //   int sn;
  53. //   map<string,int> sID;
  54. //   map<int,int> p2s, p2t;
  55. //   map<pair<int,int>,double> tm, tot;
  56. // 
  57. //   UndergroundSystem() {
  58. //     sn = 0;
  59. //   }
  60. // 
  61. //   int stationID(string stationName){
  62. //     if(sID.count(stationName)) return sID[stationName];
  63. //     return sID[stationName] = sn++;
  64. //   }
  65. // 
  66. //   void checkIn(int id, string stationName, int t) {
  67. //     p2s[id] = stationID(stationName);
  68. //     p2t[id] = t;
  69. //   }
  70. // 
  71. //   void checkOut(int id, string stationName, int t) {
  72. //     int x = p2s[id];
  73. //     int y = stationID(stationName);
  74. //     tm[make_pair(x,y)] += 1;
  75. //     tot[make_pair(x,y)] += t - p2t[id];
  76. //   }
  77. // 
  78. //   double getAverageTime(string startStation, string endStation) {
  79. //     int x = stationID(startStation);
  80. //     int y = stationID(endStation);
  81. //     return tot[make_pair(x,y)] / tm[make_pair(x,y)];
  82. //   }
  83. // };
  84.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/8/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x20): undefined reference to `main'
collect2: error: ld returned 1 exit status
stdout
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Standard output is empty
https://ideone.com/QP7XNh
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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