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  1. #pragma GCC optimize ("Ofast")
  2. #include<bits/stdc++.h>
  3. using namespace std;
  4. template<class T> inline int isLeapYear(const T y){
  5.   if(y%4){
  6.     return 0;
  7.   }
  8.   if(y%100){
  9.     return 1;
  10.   }
  11.   if(y%400){
  12.     return 0;
  13.   }
  14.   return 1;
  15. }
  16. inline long long dayIndex(long long y, int m, int d){
  17.   static int sm[13] = {0, 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
  18.   long long p;
  19.   long long res = 1;
  20.   p = (y-1) / 400;
  21.   res += p * 146097;
  22.   y -= p * 400;
  23.   res += (y-1) * 365 + (y-1) / 4 - (y-1) / 100 + sm[m] + d-1;
  24.   if(m >= 3 && isLeapYear(y)){
  25.     res++;
  26.   }
  27.   return res;
  28. }
  29. #define main dummy_main
  30. int main(){
  31.   return 0;
  32. }
  33. #undef main
  34. class Solution{
  35.   public:
  36.   int daysBetweenDates(string date1, string date2){
  37.     int y1;
  38.     int y2;
  39.     int m1;
  40.     int m2;
  41.     int d1;
  42.     int d2;
  43.     sscanf(date1.c_str(), "%d-%d-%d", &y1, &m1, &d1);
  44.     sscanf(date2.c_str(), "%d-%d-%d", &y2, &m2, &d2);
  45.     return abs( dayIndex(y1,m1,d1) - dayIndex(y2,m2,d2) );
  46.   }
  47. }
  48. ;
  49. // cLay varsion 20200227-1
  50.  
  51. // --- original code ---
  52. // #define main dummy_main
  53. // {}
  54. // #undef main
  55. // 
  56. // class Solution {
  57. // public:
  58. //   int daysBetweenDates(string date1, string date2) {
  59. //     int y1, y2, m1, m2, d1, d2;
  60. //     sscanf(date1.c_str(), "%d-%d-%d", &y1, &m1, &d1);
  61. //     sscanf(date2.c_str(), "%d-%d-%d", &y2, &m2, &d2);
  62. //     return abs( dayIndex(y1,m1,d1) - dayIndex(y2,m2,d2) );
  63. //   }
  64. // };
  65.  
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/X4j1Sh
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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