{"trustable":false,"prependHtml":"\u003cstyle type\u003d\"text/css\"\u003e\n section pre {\n display: block;\n padding: 9.5px;\n margin: 0 0 10px;\n font-size: 13px;\n line-height: 1.42857143;\n word-break: break-all;\n word-wrap: break-word;\n color: #333;\n background: rgba(255, 255, 255, 0.5);\n border: 1px solid #ccc;\n border-radius: 6px;\n }\n\u003c/style\u003e\n\u003cscript\u003e\n window.katexOptions \u003d {\n delimiters: [\n {left: \u0027\\\\(\u0027, right: \u0027\\\\)\u0027, display: false},\n {left: \u0027\\\\[\u0027, right: \u0027\\\\]\u0027, display: true}\n ]\n };\n\u003c/script\u003e\n","sections":[{"title":"Problem Statement","value":{"format":"HTML","content":"\u003ch3\u003e\u003c/h3\u003e\n给你一个有3个整数的序列 $A \u003d (A_1, A_2, A_3)$,在这个序列上,你可以多次执行一下操作:\n\u003cul\u003e \n \u003cli\u003e选择\u003cvar\u003e\\(i\\in \\{1,2,3\\}\\)\u003c/var\u003e 然后把 \u003cvar\u003e\\(A_i\\)\u003c/var\u003e增加\u003cvar\u003e1\u003c/var\u003e.\u003c/li\u003e \n\u003c/ul\u003e \n\u003cp\u003e找到最小的操作次数,使得以下等式成立: \u003cvar\u003e\\(A_2 - A_1 \u003d A_3 - A_2\\)\u003c/var\u003e 。\u003c/p\u003e"}},{"title":"Constraints","value":{"format":"HTML","content":"\u003ch3\u003e\u003c/h3\u003e\n\u003cul\u003e \n \u003cli\u003e\u003cvar\u003e\\(1\\leq A_1, A_2, A_3\\leq 10^{15}\\)\u003c/var\u003e\u003c/li\u003e \n\u003c/ul\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003ch3\u003e\u003c/h3\u003e\n\u003cp\u003e按以下格式输入:\u003c/p\u003e \n\u003cpre\u003e\u003cvar\u003e\\(A_1\\)\u003c/var\u003e \u003cvar\u003e\\(A_2\\)\u003c/var\u003e \u003cvar\u003e\\(A_3\\)\u003c/var\u003e\n\u003c/pre\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\u003ch3\u003e\u003c/h3\u003e\n\u003cp\u003e输出结果。\u003c/p\u003e"}},{"title":"Sample Input 1","value":{"format":"HTML","content":"\u003ch3\u003e\u003c/h3\u003e\n\u003cpre\u003e4 8 10\n\u003c/pre\u003e"}},{"title":"Sample Output 1","value":{"format":"HTML","content":"\u003ch3\u003e\u003c/h3\u003e\n\u003cpre\u003e2\n\u003c/pre\u003e \n\u003cp\u003e第一次操作 \u003cvar\u003e\\(i \u003d 1\\)\u003c/var\u003e ,第二次操作 \u003cvar\u003e\\(i \u003d 3\\)\u003c/var\u003e可以得到序列 \u003cvar\u003e\\((5, 8, 11)\\)\u003c/var\u003e。\u003c/p\u003e"}},{"title":"Sample Input 2","value":{"format":"HTML","content":"\u003ch3\u003e\u003c/h3\u003e\n\u003cpre\u003e10 3 4\n\u003c/pre\u003e"}},{"title":"Sample Output 2","value":{"format":"HTML","content":"\u003ch3\u003e\u003c/h3\u003e\n\u003cpre\u003e4\n\u003c/pre\u003e \n\u003cp\u003e4次操作都是 \u003cvar\u003e\\(i \u003d 2\\)\u003c/var\u003e 可以得到序列 \u003cvar\u003e\\((10, 7, 4)\\)\u003c/var\u003e.\u003c/p\u003e"}},{"title":"Sample Input 3","value":{"format":"HTML","content":"\u003ch3\u003e\u003c/h3\u003e\n\u003cpre\u003e1 2 3\n\u003c/pre\u003e"}},{"title":"Sample Output 3","value":{"format":"HTML","content":"\u003ch3\u003e\u003c/h3\u003e\n\u003cpre\u003e0\n\u003c/pre\u003e \n\u003cp\u003e序列 \u003cvar\u003e\\(A\\)\u003c/var\u003e 一开始就符合要求,无需操作。\u003c/p\u003e"}},{"title":"Sample Input 4","value":{"format":"HTML","content":"\u003ch3\u003e\u003c/h3\u003e\n\u003cpre\u003e1000000000000000 1 1000000000000000\n\u003c/pre\u003e"}},{"title":"Sample Output 4","value":{"format":"HTML","content":"\u003ch3\u003e\u003c/h3\u003e\n\u003cpre\u003e999999999999999\n\u003c/pre\u003e"}}]}