https://codeforces.com/contest/1541/problem/C시간 2초, 메모리 256MBinput :t (1 ≤ t ≤ 104)n (1 ≤ n ≤ 105)d1, d2, ..., dn(1 <= di <= 109)output : F
https://codeforces.com/contest/1541/problem/B시간 1초, 메모리 256MBinput :t (1 ≤ t ≤ 104)n (1 ≤ n ≤ 105)a1, a2, ..., an(1 <= ai <= 2 \* n)output
https://codeforces.com/contest/1541/problem/A시간 1초, 메모리 256MBinput :t (1 ≤ t ≤ 100)n (1 ≤ n ≤ 100)output : Output t answers, one for each test ca