#include <stdio.h>
int main()
{
	int g;
	scanf("%d",&g);
	float f,m,t,r;
	printf("boy=1,girl=2");
	printf("father:");
	scanf("%f",&f);
	printf("mother:");
	scanf("%f",&m);
	if (g==1)
		t=(f+m)*1.08/2;
	else if (g==2)
		t=(f*0.923+m)/2;
		printf("%.0f\n",t); 
	else  
		printf("gender error\n");
	printf(":\n");
	scanf("%f",&r);
	if ((t-r)<=3&&(t-r)>=-3)
	{
		printf("coincident\n");
	}
	else
			printf("incoincident\n");
	}