{"trustable":false,"sections":[{"title":"","value":{"format":"MD","content":"Số Fibonacci được định nghĩa như sau: \n- $\\text{Fibo}[0]\u003d1, \\text{Fibo}[1]\u003d1;$\n- $\\text{Fibo}[n]\u003d\\text{Fibo}[n-1]+\\text{Fibo}[n-2]$ $(\\forall n \\ge 2)$\n\nCho số nguyên $n$, hãy tìm số Fibonacci thứ $n$.\n \u003ch2\u003eInput\u003c/h2\u003e \n \u003cp\u003e Một số nguyên $n$. \u003c/p\u003e \n \u003ch2\u003eoutput\u003c/h2\u003e \n \u003cp\u003e In ra số Fibonacci thứ $n$. \u003c/p\u003e \n \u003ch2\u003eConstraints\u003c/h2\u003e \n \u003cul\u003e \n \u003cli\u003e$0 \\leq n \\leq 44$\u003c/li\u003e \n \u003c/ul\u003e \n \u003ch2\u003eSample Input 1\u003c/h2\u003e \n \u003cpre\u003e3\n\u003c/pre\u003e \n \u003ch2\u003eSample Output 1\u003c/h2\u003e \n \u003cpre\u003e3\n\u003c/pre\u003e\n \u003c/body\u003e\n\u003c/html\u003e"}}]}