// You are using GCC
#include<stdio.h>
int main()
{
int sum=0,n,x,i;
scanf("%d",&n);
scanf("%d",&x);
for(i=1;i<=n;i++)
{
if(i%x!=0)
sum+=i;
}
printf("%d",sum);
}
// You are using GCC
#include<stdio.h>
#include<math.h>
int main()
{
int n,i,j;
scanf("%d",&n);
if((n>0)&&(n<=10))
{
for(i=1;i<=n;i++)
{
for(j=1;j<=i;j++)
printf("%d",i);
printf("\n");
}
}
else
printf("Invalid");
}
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