Compilare: main.cpp: In function 'int main()': main.cpp:55:30: warning: variable 'tx' set but not used [-Wunused-but-set-variable] int n, m, a, i, u, v, c, tx, ty; ^~ main.cpp:55:34: warning: variable 'ty' set but not used [-Wunused-but-set-variable] int n, m, a, i, u, v, c, tx, ty; ^~