View Compilation Error

0_0_3319789_6652.cpp:37: error: `int length' redeclared as different kind of symbol
0_0_3319789_6652.cpp:5: error: previous declaration of `int length(long long int)'
0_0_3319789_6652.cpp:37: error: declaration of `int length'
0_0_3319789_6652.cpp:5: error: conflicts with previous declaration `int length(long long int)'
0_0_3319789_6652.cpp:37: error: `longlong' was not declared in this scope
0_0_3319789_6652.cpp:38: error: expected `,' or `;' before '{' token