题解 | #[NOIP2015]金币#
[NOIP2015]金币
https://www.nowcoder.com/practice/8f71f5670e6a45118d24d13868a2da9e
#include <iostream>
using namespace std;
int main() {
int k;
cin >> k;
int total_coins = 0;
int day = 1;
while (k > 0) {
for (int i = 1; i <= day && k > 0; i++) {
total_coins += day;
k--;
}
day++;
}
cout << total_coins << endl;
return 0;
}
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