Compilare: user.cpp: In function ‘int invm(int)’: user.cpp:24:9: warning: unused variable ‘i’ [-Wunused-variable] int i, p = mod - 2, ans = 1, aux = x; ^ user.cpp: In function ‘int main()’: user.cpp:78:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &n, &m); ^ user.cpp:79:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &t); ^ user.cpp:87:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d", &R[i].nr, &R[i].k); ^ user.cpp:89:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &R[i].v[j]); ^