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 ;

}