{"raw_statement":[{"iden":"problem statement","content":"You are given a sequence of $N$ integers between $1$ and $N$ (inclusive): $A = (A_1, A_2, \\dots, A_N)$.\nDetermine whether $A$ is a permutation of $(1, 2, \\dots, N)$."},{"iden":"constraints","content":"*   $1 \\leq N \\leq 10^3$\n*   $1 \\leq A_i \\leq N$\n*   All values in input are integers."},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$N$\n$A_1$ $A_2$ $\\ldots$ $A_N$"},{"iden":"sample input 1","content":"5\n3 1 2 4 5"},{"iden":"sample output 1","content":"Yes\n\n$(3, 1, 2, 4, 5)$ is a permutation of $(1, 2, 3, 4, 5)$, so we should print `Yes`."},{"iden":"sample input 2","content":"6\n3 1 4 1 5 2"},{"iden":"sample output 2","content":"No\n\n$(3, 1, 4, 1, 5, 2)$ is not a permutation of $(1, 2, 3, 4, 5, 6)$, so we should print `No`."},{"iden":"sample input 3","content":"3\n1 2 3"},{"iden":"sample output 3","content":"Yes"},{"iden":"sample input 4","content":"1\n1"},{"iden":"sample output 4","content":"Yes"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}