Compilare: main.cpp: In function 'void update_nod(long long int)': main.cpp:17:25: warning: unused variable 'sum' [-Wunused-variable] long long ls , rs , sum; ^~~ main.cpp: In function 'int main()': main.cpp:83:48: warning: unused variable 'j' [-Wunused-variable] long long n , m , i , op , x , y , maxim , j; ^ main.cpp:81:37: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("maxq.in" , "r" , stdin); ^ main.cpp:82:39: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("maxq.out" , "w" , stdout); ^ main.cpp:84:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld" , &n); ^ main.cpp:86:30: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld" , &v[i]); ^ main.cpp:88:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld" , &m); ^ main.cpp:91:46: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%lld%lld%lld" , &op , &x , &y); ^