Compilare: user.cpp: In function ‘int main()’: user.cpp:23:17: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] while(vs!=1&vj!=n&a[vs][j]==a[vj][j]){ ^ user.cpp:23:35: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] while(vs!=1&vj!=n&a[vs][j]==a[vj][j]){ ^ user.cpp:28:18: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] while(ost!=1&odr!=m&a[i][ost]==a[i][odr]){ ^ user.cpp:28:38: warning: suggest parentheses around comparison in operand of ‘&’ [-Wparentheses] while(ost!=1&odr!=m&a[i][ost]==a[i][odr]){ ^