Compilare: main.cpp: In function 'int main()': main.cpp:2:170: warning: self-comparison always evaluates to true [-Wtautological-compare] 2 | using namespace std;ifstream f("xor3.in");ofstream g("xor3.out");int q,i,j,a,b,m,p;int main(){f>>q>>i>>j>>a>>b>>m;for(;q;q--){int sol=0;for(p=1;p<=j;p*=2){if((i+j)&(j-p)==(j-p))sol+=p;}g<<sol<<'\n';i=(i*a+b)%m;j=(j*a+b)%m;}} | ~~~~~^~~~~~~ main.cpp:2:170: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] 2 | using namespace std;ifstream f("xor3.in");ofstream g("xor3.out");int q,i,j,a,b,m,p;int main(){f>>q>>i>>j>>a>>b>>m;for(;q;q--){int sol=0;for(p=1;p<=j;p*=2){if((i+j)&(j-p)==(j-p))sol+=p;}g<<sol<<'\n';i=(i*a+b)%m;j=(j*a+b)%m;}} | ~~~~~^~~~~~~