5430번: AC
2108번: 통계학
Problem - 432A - Codeforces
2875번: 대회 or 인턴
11050번: 이항 계수 1
Problem - 469A - Codeforces
Problem - 443A - Codeforces
Problem - 118D - Codeforces
Problem - 230A - Codeforces
Problem - 231A - Codeforces
Navy Apple