megascoala.cpp: In function `int main()': megascoala.cpp:48: warning: comparison between signed and unsigned integer expressions megascoala.cpp:26: warning: unused variable `int m' megascoala.cpp:26: warning: unused variable `int n1' megascoala.cpp:26: warning: unused variable `int n2' megascoala.cpp:26: warning: unused variable `int c' megascoala.cpp:26: warning: `int sol1' might be used uninitialized in this function megascoala.cpp:26: warning: `int sol2' might be used uninitialized in this function