Compilare: user.cpp: In function ‘bool Ok(int)’: user.cpp:46:21: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] v=(((1LL*((v-(1LL*(a[i-L]-'0')*aux)&(P-1))+P)&(P-1))*X+a[i]-'0')&(P-1)); ^ user.cpp:57:21: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses] v=(((1LL*((v-(1LL*(a[i-L]-'0')*aux)&(P-1))+P)&(P-1))*X+a[i]-'0')&(P-1)); ^ user.cpp: In function ‘int main()’: user.cpp:82:24: warning: ‘sol’ may be used uninitialized in this function [-Wmaybe-uninitialized] printf("%d\n", sol); ^