{"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\n\u003cscript\u003e\n window.katexOptions \u003d {\n delimiters: [\n {left: \u0027$$$$$$\u0027, right: \u0027$$$$$$\u0027, display: true},\n {left: \u0027$$$\u0027, right: \u0027$$$\u0027, display: false},\n {left: \u0027$$\u0027, right: \u0027$$\u0027, display: true},\n {left: \u0027$\u0027, right: \u0027$\u0027, display: false}\n ]\n };\n\u003c/script\u003e\n","sections":[{"title":"","value":{"format":"HTML","content":"\u003cstyle type\u003d\u0027text/css\u0027\u003e .input, .output {border: 1px solid #888888;} .output {margin-bottom:1em;position:relative;top:-1px;} .output pre,.input pre {background-color:#EFEFEF;line-height:1.25em;margin:0;padding:0.25em;} .title {background-color:#FFFFFF;border-bottom: 1px solid #888888;font-family:arial;font-weight:bold;padding:0.25em;} \u003c/style\u003e \u003cscript type\u003d\"text/x-mathjax-config\"\u003e\n MathJax.Hub.Config({\n tex2jax: {inlineMath: [[\u0027$$$\u0027,\u0027$$$\u0027]], displayMath: [[\u0027$$$$$$\u0027,\u0027$$$$$$\u0027]]}\n });\n \u003c/script\u003e\n \u003cscript type\u003d\"text/javascript\" async\n src\u003d\"https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config\u003dTeX-AMS-MML_HTMLorMML\"\u003e\n \u003c/script\u003e\n\u003cp\u003eYou are given a string \u003cstrong\u003es\u003c/strong\u003e consisting of \u003cstrong\u003en\u003c/strong\u003e lowercase Latin letters. The task is to remove exactly \u003cstrong\u003ek\u003c/strong\u003e characters (\u003cstrong\u003ek \u003c\u003d n\u003c/strong\u003e) from the string \u003cstrong\u003es\u003c/strong\u003e using the algorithm below.\u003c/p\u003e\n\u003cp\u003e\u003c/p\u003e\n\u003cul\u003e \n \u003cli\u003e if there is at least one letter \u0027\u003cspan class\u003d\"tex-font-style-tt\"\u003ea\u003c/span\u003e\u0027, remove the leftmost occurrence and stop the algorithm, otherwise go to next item; \u003c/li\u003e\n \u003cli\u003e if there is at least one letter \u0027\u003cspan class\u003d\"tex-font-style-tt\"\u003eb\u003c/span\u003e\u0027, remove the leftmost occurrence and stop the algorithm, otherwise go to next item; \u003c/li\u003e\n \u003cli\u003e ... \u003c/li\u003e\n \u003cli\u003e remove the leftmost occurrence of the letter \u0027\u003cspan class\u003d\"tex-font-style-tt\"\u003ez\u003c/span\u003e\u0027 and stop the algorithm. \u003c/li\u003e\n\u003c/ul\u003e\n\u003cp\u003e\u003c/p\u003e\n\u003cp\u003eThis algorithm removes a single letter from the string in one iteration. You have to perform this algorithm exactly \u003cstrong\u003ek\u003c/strong\u003e times, thus removing exactly \u003cstrong\u003ek\u003c/strong\u003e characters. Task is to find the resulting string.\u003c/p\u003e"}},{"title":"Input","value":{"format":"HTML","content":"\u003cp\u003eThe first line of input contains two integers \u003cstrong\u003en\u003c/strong\u003e and \u003cstrong\u003ek\u003c/strong\u003e (\u003cstrong\u003e\u003ci\u003e1 \u003c\u003d k \u003c\u003d n \u003c\u003d 4 × 10\u003csup\u003e5\u003c/sup\u003e\u003c/i\u003e\u003c/strong\u003e) — the length of the string and the number of letters you will remove.\u003c/p\u003e\n\u003cp\u003eThe second line contains the string \u003cstrong\u003es\u003c/strong\u003e consisting of \u003cstrong\u003en\u003c/strong\u003e lowercase Latin letters.\u003c/p\u003e"}},{"title":"Output","value":{"format":"HTML","content":"\u003cp\u003ePrint the string that will be obtained from \u003cstrong\u003es\u003c/strong\u003e after you remove exactly \u003cstrong\u003ek\u003c/strong\u003e letters using the above algorithm \u003cstrong\u003ek\u003c/strong\u003e number of times.\u003c/p\u003e\n\u003cp\u003eIf the resulting string is empty, print nothing. It is allowed to print nothing or an empty line (line break).\u003c/p\u003e"}},{"title":"Examples","value":{"format":"HTML","content":"\u003cdiv class\u003d\"sample-test\"\u003e\n \u003cdiv class\u003d\"input\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Input\n \u003c/div\u003e\n \u003cpre\u003e15 3\u003cbr\u003ecccaabababaccbc\u003cbr\u003e\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"output\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Output\n \u003c/div\u003e\n \u003cpre\u003ecccbbabaccbc\u003cbr\u003e\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"input\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Input\n \u003c/div\u003e\n \u003cpre\u003e15 9\u003cbr\u003ecccaabababaccbc\u003cbr\u003e\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"output\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Output\n \u003c/div\u003e\n \u003cpre\u003ecccccc\u003cbr\u003e\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"input\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Input\n \u003c/div\u003e\n \u003cpre\u003e1 1\u003cbr\u003eu\u003cbr\u003e\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"output\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Output\n \u003c/div\u003e\n \u003cpre\u003e\u003c/pre\u003e\n \u003c/div\u003e\n \u003cdiv class\u003d\"output\"\u003e\n \u003cdiv class\u003d\"title\"\u003e\n Explanation\n \u003c/div\u003e\n \u003cpre\u003eEmpty string. Note that you don’t have to print anything in this case. Just print a line break.\u003c/pre\u003e\n \u003c/div\u003e\n\n\n\u003c/div\u003e"}}]}