#include <cstdio>

#define _(l) int l

#define ___(l,L) for (_(o)=0,x=l o*2;o<x;o++)O= L o;

#define __ _ ( _ )

const __=0x80000000;

_(main)()

{

    int T;

    scanf("%d",&T);

    while(T--){

    _(O);

    scanf("%d",&O);

    if(O&_)___(-,-~)

        else ___(+,~-)

            printf("%d\n",-O);

    }

    return ;

}

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