Compilare: user.cpp: In function ‘int main()’: user.cpp:15:33: warning: unused variable ‘pathx’ [-Wunused-variable] unsigned int N, M, i, p, q, pathx[100000], pathy[100000], depthx, depthy, notRoot; ^ user.cpp:15:48: warning: unused variable ‘pathy’ [-Wunused-variable] unsigned int N, M, i, p, q, pathx[100000], pathy[100000], depthx, depthy, notRoot; ^ user.cpp:15:63: warning: unused variable ‘depthx’ [-Wunused-variable] unsigned int N, M, i, p, q, pathx[100000], pathy[100000], depthx, depthy, notRoot; ^ user.cpp:15:71: warning: unused variable ‘depthy’ [-Wunused-variable] unsigned int N, M, i, p, q, pathx[100000], pathy[100000], depthx, depthy, notRoot; ^ user.cpp:15:79: warning: unused variable ‘notRoot’ [-Wunused-variable] unsigned int N, M, i, p, q, pathx[100000], pathy[100000], depthx, depthy, notRoot; ^ user.cpp:23:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &N, &M); ^ user.cpp:27:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%llu", &v[i].v); ^ user.cpp:36:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &p, &q); ^ user.cpp:51:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %llu %llu", &N, &r, &t); ^