JsConf non-minified.js

let lineNumber = +readline()
let input = [];

while (lineNumber--) {
    input.push(readline())
}
writeline(UltraCISC(input))

function UltraCISC(commands) {
    let result = new Array(32).fill("?");
    commands.forEach(cmd => {
        const tokens = cmd.split(" ");
        const i = tokens[0];
        const arg1 = tokens[1];
        let arg2;
        switch (i) {
            case "SET": 
                result[arg1] = "1";
                break;
            case "CLEAR":
                result[arg1] = "0";
                break;
            case "AND":
                arg2 = tokens[2];
                if (result[arg1] === "0" || result[arg2] === "0") {
                    result[arg1] = "0";
                } else if (result[arg1] === "?" || result[arg2] === "?") {
                    result[arg1] = "?";
                } else {
                    result[arg1] = "1";
                }
                break;
            case "OR":
                arg2 = tokens[2];
                if (result[arg1] === "1" || result[arg2] === "1") {
                    result[arg1] = "1";
                } else if (result[arg1] === "?" || result[arg2] === "?") {
                    result[arg1] = "?";
                } else {
                    result[arg1] = "0";
                }
                break;
        }
    })
    return result.reverse().join("");
}