Submission #19945

#	Time	Username	Problem	Language	Result	Execution time	Memory
19945		yukariko	동전 (kriii4_E)	C++98	0 / 100	0 ms	1720 KiB

D

#include <bits/stdc++.h>
using namespace std;

#define MOD 1000000007

typedef long long lld;

int main(){
	int n;
	while(~scanf("%d", &n)){
		if(n < 3) puts("1");
		else {
			n -= 3;
			printf("%d\n", n*n + n + 2);
		}
	}
	return 0;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 95