Compilare: user.cpp: In function ‘void EulerCy(std::pair<int, int>)’: user.cpp:78:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (; Gidx[nod] < V[nod].size(); ) ^ user.cpp: In function ‘void readSolve()’: user.cpp:61:50: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d", &a.x, &a.y, &b.x, &b.y); ^ user.cpp: In function ‘int main()’: user.cpp:92:62: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d%d%d", &t, &n, &m, &inPos.x, &inPos.y, &k); ^ user.cpp:97:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &a, &b, &r); ^ user.cpp:103:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &g); ^ user.cpp:116:54: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d", &a.x, &a.y, &b.x, &b.y); ^