const rl = require("readline").createInterface({ input: process.stdin }); var iter = rl[Symbol.asyncIterator](); const readline = async () => (await iter.next()).value; void (async function () { // Write your code here let length = await readline(); let str = await readline(); const arr = str.split(""); let l = 0; const strTemp = []; for (i = 0; i < length; i++) { const char = arr[i]; if (strTemp.length === 0) { if (char === "a" || char === "h") { strTemp.push(char); } } else if (strTemp[strTemp.length - 1] === "a") { if (char === "h") { strTemp.push(char); } else { l = Math.max(strTemp.length, l); strTemp.length = 0; if (char === "a" || char === "h") { strTemp.push(char); } } } else if (strTemp[strTemp.length - 1] === "h") { if (char === "a") { strTemp.push(char); } else { l = Math.max(strTemp.length, l); strTemp.length = 0; if (char === "a" || char === "h") { strTemp.push(char); } } } } l = Math.max(strTemp.length, l); console.log(l); })();