// ----------------------------------------------------------

#include<stdio.h>

void main()
{
	double n0=10;
	int n1=10;

	printf("%f %d\n",n0/3,n1/3);
}

// ----------------------------------------------------------

#include <stdio.h>

void main()
{
	int num=0,k4=0,k2=0,k1=0;
	
	printf("Input num by binary ?");
	scanf("%d",&num);
	k4 = num/100;
	k2 = (num-k4*100)/10;
	k1 = (num-k4*100-k2*10);
	printf("Decimal = %d \n",k4*4+k2*2+k1); 
}

// ----------------------------------------------------------
	
#include <stdio.h>

void main()
{
	int sum=0,i=0;

	
	for(i=1; i<11; i++)
	{
		printf("i= %d \n",i);
		sum = sum + i;
		
	}	

	printf("\n %d\n",sum);
}

// ----------------------------------------------------------

#include <stdio.h>

void main()
{
	int n=0,m=0,sum=0;

	printf("from N to M :");
	scanf("%d %d",&n,&m);
	for( ; n< m+1;n++){
		sum = sum + n;
	}

	printf("%d \n",sum);
}

// ----------------------------------------------------------

#include <stdio.h>

void main()
{
	int n=0,m=0,sum=0;

	printf("from N to M :");
	scanf("%d %d",&n,&m);

	while(n < m+1){
		sum = sum + n;
		n = n + 1;
	}

	printf("%d \n",sum);
}

// ----------------------------------------------------------

#include <stdio.h>

void main()
{
	double x=0;

	scanf("%lf",&x);
	printf("%f\n",x/7);
}