题解 | #[NOIP2015]金币#
[NOIP2015]金币
https://www.nowcoder.com/practice/8f71f5670e6a45118d24d13868a2da9e
#include <stdio.h>
int main() {
int k=0,sum=0,count =0,l =1;
scanf("%d",&k);
for(int i =1;i<=k;i++)
{
if(count<l)
{
sum += l;
count++;
}
if(count==l)
{
l++;
count=0;
}
}
printf("%d\n",sum);
return 0;
}
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