smith.cpp: In function `int main()': smith.cpp:26: warning: comparison between signed and unsigned integer expressions smith.cpp:31: warning: comparison between signed and unsigned integer expressions smith.cpp:63: warning: comparison between signed and unsigned integer expressions smith.cpp:76: warning: comparison between signed and unsigned integer expressions smith.cpp:111: warning: comparison between signed and unsigned integer expressions smith.cpp:116: warning: comparison between signed and unsigned integer expressions smith.cpp:151: warning: comparison between signed and unsigned integer expressions smith.cpp:182: warning: comparison between signed and unsigned integer expressions smith.cpp:214:2: warning: no newline at end of file