{"trustable":false,"prependHtml":"\u003cstyle type\u003d\u0027text/css\u0027\u003e\n .input, .output {\n border: 1px solid #888888;\n }\n .output {\n margin-bottom: 1em;\n position: relative;\n top: -1px;\n }\n .output pre, .input pre {\n background-color: #EFEFEF;\n line-height: 1.25em;\n margin: 0;\n padding: 0.25em;\n }\n \u003c/style\u003e\n \u003clink rel\u003d\"stylesheet\" href\u003d\"//codeforces.org/s/96598/css/problem-statement.css\" type\u003d\"text/css\" /\u003e\u003cscript\u003e window.katexOptions \u003d { disable: true }; \u003c/script\u003e\n\u003cscript type\u003d\"text/x-mathjax-config\"\u003e\n MathJax.Hub.Config({\n tex2jax: {\n inlineMath: [[\u0027$$$\u0027,\u0027$$$\u0027], [\u0027$\u0027,\u0027$\u0027]],\n displayMath: [[\u0027$$$$$$\u0027,\u0027$$$$$$\u0027], [\u0027$$\u0027,\u0027$$\u0027]]\n }\n });\n\u003c/script\u003e\n\u003cscript type\u003d\"text/javascript\" async src\u003d\"https://mathjax.codeforces.org/MathJax.js?config\u003dTeX-AMS_HTML-full\"\u003e\u003c/script\u003e","sections":[{"title":"","value":{"format":"HTML","content":"\u003cp\u003eKing Robart is throwing a King party, all the kings from another kingdom are coming.His guests all the kings are so hungry, so Robart\u0027s People prepared various Food items \u003c/p\u003e\n\u003cp\u003eThere are $$$n$$$ Food items, numbered by integers $$$1, 2, \\ldots, n$$$. One food item can be served to only one king. Every King has exactly two favourite Food.\u003c/p\u003e\n\u003cul\u003e \n \u003cli\u003e First, Robart will make a seating plan for all of the kings. Each king will occupy their own seat side by side\u003c/li\u003e\n \u003cli\u003e Then in this order, The food will be served one by one. \u003c/li\u003e\n \u003cli\u003e Each king in their turn will eat all remaining favourite food. In case no favourite food item is present when a king goes up, The King becomes very angry \u003c/li\u003e\n\u003c/ul\u003e \n\u003cp\u003eHelp Robart to minimize the number of Angry kings by seating the king in an optimal way.\u003c/p\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003cp\u003eThe first line contains integers $$$n$$$ and $$$k$$$ ($$$2 \\le n \\le 10^5$$$, $$$1 \\le k \\le 10^5$$$), the number of food item and the number of king. \u003c/p\u003e\n\u003cp\u003eThe $$$i$$$-th of the following $$$k$$$ lines contains two integers $$$x_i$$$ and $$$y_i$$$ ($$$1 \\le x_i, y_i \\le n$$$, $$$x_i \\ne y_i$$$), favorite food of the $$$i$$$-th king.\u003c/p\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\u003cp\u003eOutput one integer, the smallest possible number of Angry King.\u003c/p\u003e"}},{"title":"Sample 1","value":{"format":"HTML","content":"\u003ctable class\u003d\u0027vjudge_sample\u0027\u003e\n\u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eInput\u003c/th\u003e\n \u003cth\u003eOutput\u003c/th\u003e\n \u003c/tr\u003e\n\u003c/thead\u003e\n\u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cpre\u003e5 4\n1 2\n4 3\n1 4\n3 4\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e1\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}},{"title":"Sample 2","value":{"format":"HTML","content":"\u003ctable class\u003d\u0027vjudge_sample\u0027\u003e\n\u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eInput\u003c/th\u003e\n \u003cth\u003eOutput\u003c/th\u003e\n \u003c/tr\u003e\n\u003c/thead\u003e\n\u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cpre\u003e6 5\n2 3\n2 1\n3 4\n6 5\n4 5\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e0\n\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}}]}