/in/foo.cc: In function 'int main()':
/in/foo.cc:46:42: warning: overflow in implicit constant conversion [-Woverflow]
  int n, m, i, j, a, b, c, l, r, ans(1e+10);
                                          ^
/in/foo.cc:46:27: warning: unused variable 'l' [-Wunused-variable]
  int n, m, i, j, a, b, c, l, r, ans(1e+10);
                           ^