题解 | #[NOIP2015]金币#
[NOIP2015]金币
https://www.nowcoder.com/practice/8f71f5670e6a45118d24d13868a2da9e
#include <stdio.h>
#include<math.h>
int main() {
int a,sum = 0,m = 1;
int temp = 0;
int k = 1;//1+2+2+3+3+3=14 1 = 1*1;2 = 2*2 3 = 3*3;
scanf("%d",&a);
for(int i = 1;i<=a;i++)
{
for(int j = 1;j<=i;j++)
{
if(k>a)break;
sum+=i;
k++;
}
}
printf("%d",sum);
}
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