trip.cpp: In function `int main()': trip.cpp:64: warning: comparison between signed and unsigned integer expressions trip.cpp:82: warning: comparison between signed and unsigned integer expressions trip.cpp:41: warning: unused variable `int k' trip.cpp:41: warning: unused variable `int c' trip.cpp:41: warning: unused variable `int cmin' trip.cpp: In function `bool flux()': trip.cpp:110: warning: comparison between signed and unsigned integer expressions trip.cpp: In function `void dijkstra()': trip.cpp:145: warning: comparison between signed and unsigned integer expressions trip.cpp: In function `void biconex(int, int)': trip.cpp:162: warning: comparison between signed and unsigned integer expressions trip.cpp:159: warning: unused variable `int p'