제출 #20002

#제출 시각아이디문제언어결과실행 시간메모리
20002yukariko동전 (kriii4_E)C++98
0 / 100
0 ms1720 KiB
#include <bits/stdc++.h>
using namespace std;
 
#define MOD 1000000007
 
typedef long long lld;

lld f(int n){
	if(n < 3) return 1;
	n -= 2;
	lld r = (1LL<<n);
	if(n>3) r -= (1LL<<(n-3));
	return r;
}

int main(){
	int n;
	while(~scanf("%d", &n))
		printf("%lld\n", f(n));
	return 0;
}
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