func_code_string: #include <bits/stdc++.h>   using namespace std;   const int INF = 0x3f3f3f3f;   const double Pi = acos(-1);   namespace {   template <typename T>   inline void read(T &x) {     x = 0;     T f = 1;     char s = getchar();     for (; !isdigit(s); s = getchar())       if (s ==  - ) f = -1;     for (; isdigit(s); s = getchar()) x = (x << 3) + (x << 1) + (s ^ 48);     x *= f;   }   }  // namespace   long long fun(long long x) {     switch (x % 4) {       case 0:         return x;       case 1:         return 1;       case 2:         return x + 1;       case 3:         return 0;     }   }   int main() {     int n;     read(n);     long long xi, mi;     long long ans = 0;     for (int i = 1; i <= n; i++) {       read(xi);       read(mi);       ans ^= fun(xi + mi - 1) ^ fun(xi - 1);     }     if (ans)       cout <<  tolik  << endl;     else       cout <<  bolik  << endl;   }   