{"raw_statement":[{"iden":"problem statement","content":"There were $N$ contestants in the qualification round of a programming contest. All contestants got distinct ranks.  \nYou are given a length-$N$ string $S$, which represents whether the contestants want to participate in the final round or not. Specifically,\n\n*   if the $i$\\-th character of $S$ is `o`, the contestant ranked $i$\\-th in the qualification wants to participate in the final;\n*   if the $i$\\-th character of $S$ is `x`, the contestant ranked $i$\\-th in the qualification does not want to participate in the final.\n\nAmong those who want to participate in the final, $K$ contestants with the smallest ranks advance to the final.\nPrint a string $T$ of length $N$ that satisfies the following conditions:\n\n*   if the contestant ranked $i$\\-th in the qualification advances to the final, the $i$\\-th character of $T$ is `o`;\n*   if the contestant ranked $i$\\-th in the qualification does not advance to the final, the $i$\\-th character of $T$ is `x`."},{"iden":"constraints","content":"*   $N$ and $K$ are integers.\n*   $1 \\le K \\le N \\le 100$\n*   $S$ is a string of length $N$ consisting of `o` and `x`.\n*   $S$ has at least $K$ `o`'s."},{"iden":"input","content":"The input is given from Standard Input in the following format:\n\n$N$ $K$\n$S$"},{"iden":"sample input 1","content":"10 3\noxxoxooxox"},{"iden":"sample output 1","content":"oxxoxoxxxx\n\nIn this input, $N=10$ people took part in the qualification round, and $K=3$ of them advance to the final.\n\n*   The participant who ranked $1$\\-st in the qualification wants to participate in the final, so the participant advances to the final. $1$ participant has advanced so far.\n*   The participants who ranked $2$\\-nd and $3$\\-rd in the qualification do not want to participate in the final, so the participants do not advance to the final.\n*   The participant who ranked $4$\\-th in the qualification wants to participate in the final, so the participant advances to the final. $2$ participants have advanced so far.\n*   The participants who ranked $5$\\-th in the qualification does not want to participate in the final, so the participant does not advance to the final.\n*   The participant who ranked $6$\\-th in the qualification wants to participate in the final, so the participant advances to the final. $3$ participants have advanced so far.\n*   Now that $3$ people have advanced to the final, no participants ranked $7$\\-th or lower advance to the final."}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}