【C】#[NOIP2015]金币#
[NOIP2015]金币
https://www.nowcoder.com/practice/8f71f5670e6a45118d24d13868a2da9e
#include <stdio.h>
int main() {
int k, sum = 0, day = 0;
scanf("%d", &k);
for (int i = 1; i <= k; i++) {
for (int j = 1; j <= i; j++) {
sum += i;
day++;
if (day == k) {
printf("%d", sum);
break;
}
}
}
return 0;
}
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