func_code_string: #include <bits/stdc++.h>   using namespace std;   char s[100005];   int day[] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};   map<string, int> my;   void check(char* s) {     if (((s[0]) >=  0  && (s[0]) <=  9 ) && ((s[1]) >=  0  && (s[1]) <=  9 ) &&         ((s[3]) >=  0  && (s[3]) <=  9 ) && ((s[4]) >=  0  && (s[4]) <=  9 ) &&         ((s[6]) >=  0  && (s[6]) <=  9 ) && ((s[7]) >=  0  && (s[7]) <=  9 ) &&         ((s[8]) >=  0  && (s[8]) <=  9 ) && ((s[9]) >=  0  && (s[9]) <=  9 ) &&         s[2] ==  -  && s[5] ==  - ) {       int d = atoi(s);       int m = atoi(s + 3);       int y = atoi(string(s + 6, s + 10).c_str());       if (m <= 12 && d > 0 && d <= day[m - 1] && y >= 2013 && y <= 2015) {         ++my[string(s, s + 10)];       }     }   }   int main() {     gets(s);     int n = strlen(s);     for (int i = 0; i + 10 <= n; ++i) check(s + i);     string res(  );     int max = -1;     for (typeof((my).begin()) it = (my).begin(), _e = (my).end(); it != _e; ++it)       if (it->second > max) {         max = it->second;         res = it->first;       }     cout << res << endl;     return 0;   }   