/in/foo.cc: In function 'int main()':
/in/foo.cc:15:25: warning: suggest parentheses around comparison in operand of '!=' [-Wparentheses]
                    if(i1!=i2!=i3!=i4!=i5!=i6!=i7!=i8!=i9)
                       ~~^~~~
/in/foo.cc:15:29: warning: suggest parentheses around comparison in operand of '!=' [-Wparentheses]
                    if(i1!=i2!=i3!=i4!=i5!=i6!=i7!=i8!=i9)
                       ~~~~~~^~~~
/in/foo.cc:15:33: warning: suggest parentheses around comparison in operand of '!=' [-Wparentheses]
                    if(i1!=i2!=i3!=i4!=i5!=i6!=i7!=i8!=i9)
                       ~~~~~~~~~~^~~~
/in/foo.cc:15:37: warning: suggest parentheses around comparison in operand of '!=' [-Wparentheses]
                    if(i1!=i2!=i3!=i4!=i5!=i6!=i7!=i8!=i9)
                       ~~~~~~~~~~~~~~^~~~
/in/foo.cc:15:41: warning: suggest parentheses around comparison in operand of '!=' [-Wparentheses]
                    if(i1!=i2!=i3!=i4!=i5!=i6!=i7!=i8!=i9)
                       ~~~~~~~~~~~~~~~~~~^~~~
/in/foo.cc:15:45: warning: suggest parentheses around comparison in operand of '!=' [-Wparentheses]
                    if(i1!=i2!=i3!=i4!=i5!=i6!=i7!=i8!=i9)
                       ~~~~~~~~~~~~~~~~~~~~~~^~~~
/in/foo.cc:15:49: warning: suggest parentheses around comparison in operand of '!=' [-Wparentheses]
                    if(i1!=i2!=i3!=i4!=i5!=i6!=i7!=i8!=i9)
                       ~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~