caravane.cpp: In function `void ComputeDistances()': caravane.cpp:61: warning: unused variable `int tata' caravane.cpp: In function `void Solve()': caravane.cpp:93: warning: unused variable `edge*p' caravane.cpp:96: warning: unused variable `clock_t start' caravane.cpp:96: warning: unused variable `clock_t stop' caravane.cpp: In function `void Readdata()': caravane.cpp:157: warning: int format, long int arg (arg 4)