View Compilation Error

0_0_11889210_25754.cpp: In function `int main()':
0_0_11889210_25754.cpp:53: error: ISO C++ forbids declaration of `ans' with no type
0_0_11889210_25754.cpp:53: error: cannot convert `std::pair<int, int>' to `int' in initialization
0_0_11889210_25754.cpp:60: error: no matching function for call to `max(int&, std::pair<int, int>)'
0_0_11889210_25754.cpp:64: error: `first' has not been declared
0_0_11889210_25754.cpp:64: error: request for member of non-aggregate type before ')' token
0_0_11889210_25754.cpp:65: error: `first' has not been declared
0_0_11889210_25754.cpp:65: error: request for member of non-aggregate type before ',' token
0_0_11889210_25754.cpp:65: error: `second' has not been declared
0_0_11889210_25754.cpp:65: error: request for member of non-aggregate type before '-' token