HD 1001 sum problem
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#include<stdio.h>
int main()
{
int n,i,sum=0;
while(scanf("%d",&n)!=EOF)
{
for(i=1;i<=n;i++)
sum+=i;
printf("%d\n\n",sum);
sum=0;
}
return 0;
}
int main()
{
int n,i,sum=0;
while(scanf("%d",&n)!=EOF)
{
for(i=1;i<=n;i++)
sum+=i;
printf("%d\n\n",sum);
sum=0;
}
return 0;
}
0 0
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