int main()
{
	int w,w1,w2,w3,w4,w5,w6,w7,w8,w9,w10,w11,w12;
	int m2,m3,m4,m5,m6,m7,m8,m9,m10,m11,m12;
	scanf("%d",&w);
	w1=w+5;
	if(w1>7){
		w1=w1-7;
	}
	if(w1==5){
		printf("1\n");
	}
	m2=w+3;
	if(m2>7){
		m2=m2-7;
	}
	w2=m2+5;
	if(w2>7){
		w2=w2-7;
	}
	if(w2==5){
		printf("2\n");
	}
	m3=m2;
	w3=m3+5;
	if(w3>7){
		w3=w3-7;
	}
	if(w3==5){
		printf("3\n");
	}
	m4=m3+3;
	if(m4>7){
		m4=m4-7;
	}
	w4=m4+5;
	if(w4>7){
		w4=w4-7;
	}
	if(w4==5){
		printf("4\n");
	}
	m5=m4+2;
	if(m5>7){
		m5=m5-7;
	}
	w5=m5+5;
	if(w5>7){
		w5=w5-7;
	}
	if(w5==5){
		printf("5\n");
	}
	m6=m5+3;
	if(m6>7){
		m6=m6-7;
	}
	w6=m6+5;
	if(w6>7){
		w6=w6-7;
	}
	if(w6==5){
		printf("6\n");
	}
	m7=m6+2;
	if(m7>7){
		m7=m7-7;
	}
	w7=m7+5;
	if(w7>7){
		w7=w7-7;
	}
	if(w7==5){
		printf("7\n");
	}
	m8=m7+3;
	if(m8>7){
		m8=m8-7;
	}
	w8=m8+5;
	if(w8>7){
		w8=w8-7;
	}
	if(w8==5){
		printf("8\n");
	}
	m9=m8+3;
	if(m9>7){
		m9=m9-7;
	}

	w9=m9+5;
	if(w9>7){
		w9=w9-7;
	}
	if(w9==5){
		printf("9\n");
	}

	m10=m9+2;
	if(m10>7){
		m10=m10-7;
	}

	w10=m10+5;
	if(w10>7){
		w10=w10-7;
	}
	if(w10==5){
		printf("10\n");
	}

	m11=m10+3;
	if(m11>7){
		m11=m11-7;
	}

	w11=m11+5;
	if(w11>7){
		w11=w11-7;
	}
	if(w11==5){
		printf("11\n");
	}

	m12=m11+2;
	if(m12>7){
		m12=m12-7;
	}
	w12=m12+5;
	if(w12>7){
		w12=w12-7;
	}
	if(w12==5){
		printf("12\n");
	}
	return 0;
}