let [a,b,c] = require("fs").readFileSync(0,'utf8').split(" ").map((el)=>Number(el) );console.log(a-(b+c));
input <- file('stdin', 'r')data <- readLines(input, n=1)res <- as.numeric( strsplit(data, " ")[[1]] )cat(res[1] - (res[2] + res[3]) )
