{"trustable":false,"sections":[{"title":"","value":{"format":"HTML","content":"\u003cstyle type\u003d\"text/css\"\u003e\r\nh1,h2,h3,h4,h5,h6{margin-bottom:0;}div.textBG p{margin: 0 0 0.0001pt;}\u003c/style\u003e\r\n\u003cp\u003e\r\n\tIn this problem, you have to analyze a particular sorting algorithm. The algorithm processes a sequence of n distinct integers by swapping two adjacent sequence elements until the sequence is sorted in ascending order. For the input sequence\u003c/p\u003e\r\n\u003cblockquote\u003e\r\n\t\u003ctt\u003e9 1 0 5 4\u003c/tt\u003e\u0026nbsp;,\u003c/blockquote\u003e\r\n\u003cp\u003e\r\n\t\u003cspan data-scayt_word\u003d\"Ultra-QuickSort\" data-scaytid\u003d\"2\"\u003eUltra-QuickSort\u003c/span\u003e produces the output\u003c/p\u003e\r\n\u003cblockquote\u003e\r\n\t\u003ctt\u003e0 1 4 5 9\u003c/tt\u003e\u0026nbsp;.\u003c/blockquote\u003e\r\n\u003cp\u003e\r\n\tYour task is to determine how many swap operations \u003cspan data-scayt_word\u003d\"Ultra-QuickSort\" data-scaytid\u003d\"3\"\u003eUltra-QuickSort\u003c/span\u003e needs to perform in order to sort a given input sequence.\u003c/p\u003e\r\n\u003cp\u003e\r\n\tThe input contains several test cases. Every test case begins with a line that contains a single integer \u003ci\u003en \u0026lt; 500,000\u003c/i\u003e -- the length of the input sequence. Each of the the following \u003ci\u003en\u003c/i\u003e lines contains a single integer \u003ci\u003e0 \u0026le; a[i] \u0026le; 999,999,999\u003c/i\u003e, the \u003cspan data-scayt_word\u003d\"i-th\" data-scaytid\u003d\"7\"\u003e\u003ci\u003ei\u003c/i\u003e-th\u003c/span\u003e input sequence element. Input is terminated by a sequence of length \u003ci\u003en \u003d 0\u003c/i\u003e. This sequence must not be processed.\u003c/p\u003e\r\n\u003cp\u003e\r\n\tFor every input sequence, your program prints a single line containing an integer number \u003ci\u003eop\u003c/i\u003e, the minimum number of swap operations necessary to sort the given input sequence.\u003c/p\u003e\r\n\u003ch3\u003e\r\n\tSample Input\u003c/h3\u003e\r\n\u003cpre\u003e\r\n5\r\n9\r\n1\r\n0\r\n5\r\n4\r\n3\r\n1\r\n2\r\n3\r\n0\u003c/pre\u003e\r\n\u003ch3\u003e\r\n\tOutput for Sample Input\u003c/h3\u003e\r\n\u003cpre\u003e\r\n6\r\n0\u003c/pre\u003e"}}]}