{"raw_statement":[{"iden":"statement","content":"Your favorite soccer announcer will always say \"gooooal\" for a very long time after a team scores. You have a \"speech to text\" tool that transcribed the announcer's words. Given his written down goal reaction, figure out exactly how many \"o\" letters are in it.\n\nThe only line of input contains a single string $s$: the announcer's reaction to a team's goal.\n\nOutput a single integer $n$: the number of \"o\" letters in the given string.\n\n"},{"iden":"input","content":"The only line of input contains a single string $s$: the announcer's reaction to a team's goal."},{"iden":"output","content":"Output a single integer $n$: the number of \"o\" letters in the given string."}],"translated_statement":null,"sample_group":[],"show_order":[],"formal_statement":"**Definitions**  \nLet $ s $ be a string over the alphabet $ \\Sigma = \\{ \\text{a}, \\text{b}, \\dots, \\text{z} \\} $.\n\n**Objective**  \nCompute $ n = \\# \\{ i \\mid s[i] = \\text{'o'} \\} $, the number of occurrences of the character 'o' in $ s $.","simple_statement":"Count the number of 'o' letters in the given string.","has_page_source":false}