CF 353A Domino

#include<stdio.h>
#include<math.h>
int main()
{
    int i,n;
    int x,y;
    int m1,m2,m3,m4;
    while(scanf("%d",&n)!=EOF)
    {
        m1=;
        m2=;
        m3=;
        m4=;
        for(i=; i<n; i++)
        {
            scanf("%d%d",&x,&y);
            if(x&)
            {
                if(y&)
                    m1++;//ji ji
                else m2++;
            }
            else
            {
                if(y&)
                    m3++;
                else m4++;//ou ou
            }

        }
        if((m2+m3)%==&&(m2+m3)/>=(m1%))
        {
            m1=m1%;
            m2=m2%;
            m3=m3%;
            if(m1==&&m2==&&m3==)printf("0\n");
            else if(m1==&&m2==&&m3==)printf("0\n");
            else printf("1\n");
            //printf("%d\n",fabs(m3-m2)/2);
        }
        else printf("-1\n");
        //if()

    }

    return ;
}