题解 | #统计大写字母个数#

const rl = require("readline").createInterface({ input: process.stdin });
var iter = rl[Symbol.asyncIterator]();
const readline = async () => (await iter.next()).value;

let das = 'QWERTYUIOPASDFGHJKLZXCVBNM';
void async function () {
    // Write your code here
    while(line = await readline()){
        let tokens = line.split('');
        // let a = parseInt(tokens[0]);
        // let b = parseInt(tokens[1]);
        let n = 0;
        for(let i = 0; i<tokens.length; i++) {
            das.includes(tokens[i]) && n++;
        }
        console.log(n);
    }
}()