Compilare: user.cpp: In function ‘void Sweep()’: user.cpp:117:13: warning: unused variable ‘pmin’ [-Wunused-variable] int pmin = 0, prv = 0, k = 0; ^ user.cpp:117:32: warning: unused variable ‘k’ [-Wunused-variable] int pmin = 0, prv = 0, k = 0; ^ user.cpp: In function ‘int main()’: user.cpp:192:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d", &n, &m, &r, &e); ^ user.cpp:196:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &v[N].x, &v[N].y); ^ user.cpp:202:51: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d", &v[N].x, &v[N].y, &v[N].s); ^