siruri2.cpp: In function `void Read()': siruri2.cpp:13: warning: comparison between signed and unsigned integer expressions siruri2.cpp:15: warning: comparison between signed and unsigned integer expressions siruri2.cpp: In function `void Solve()': siruri2.cpp:34: warning: comparison between signed and unsigned integer expressions siruri2.cpp:36: warning: comparison between signed and unsigned integer expressions siruri2.cpp:38: warning: comparison between signed and unsigned integer expressions siruri2.cpp:39: warning: comparison between signed and unsigned integer expressions /tmp/cci9EqpX.o(.text+0xf): In function `Read()': : the `gets' function is dangerous and should not be used.