Compilare: user.cpp: In function ‘int main()’: user.cpp:21:33: warning: unused variable ‘mij’ [-Wunused-variable] long long int i,n,q,a,b,c,d,mij,st,dr,k,m,c1,c2; ^~~ user.cpp:21:37: warning: unused variable ‘st’ [-Wunused-variable] long long int i,n,q,a,b,c,d,mij,st,dr,k,m,c1,c2; ^~ user.cpp:21:40: warning: unused variable ‘dr’ [-Wunused-variable] long long int i,n,q,a,b,c,d,mij,st,dr,k,m,c1,c2; ^~ user.cpp:22:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lld %lld",&n,&m); ^ user.cpp:24:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lld",&v[i]); ^ user.cpp:27:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lld",&q); ^ user.cpp:29:51: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%lld%lld%lld%lld",&a,&b,&c,&d); ^