Compilare: main.cpp: In function 'int main()': main.cpp:38:39: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(x&(1<<bit) == 0 && a[i][k]&(1<<bit) == 0) ~~~~~~~~~^~~~ main.cpp:38:64: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(x&(1<<bit) == 0 && a[i][k]&(1<<bit) == 0) ~~~~~~~~~^~~~ main.cpp:41:43: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(x&(1<<bit) != 0 && a[i][k]&(1<<bit) == 0) ~~~~~~~~~^~~~ main.cpp:41:68: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(x&(1<<bit) != 0 && a[i][k]&(1<<bit) == 0) ~~~~~~~~~^~~~ main.cpp:44:47: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(x&(1<<bit) == 0 && a[i][k]&(1<<bit) != 0) ~~~~~~~~~^~~~ main.cpp:44:72: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(x&(1<<bit) == 0 && a[i][k]&(1<<bit) != 0) ~~~~~~~~~^~~~ main.cpp:50:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int t = 0; t < l.size(); t++) ~~^~~~~~~~~~