function solve(input = []) {
    let capacity = Number(input.shift());
    input.pop()

    let obj = {};

    for (let line of input) {
        let tokens = line.split('=');
        let command = tokens[0];

        switch (command) {
            case 'Add':
                let name = tokens[1];
                let sent = Number(tokens[2]);
                let received = Number(tokens[3]);

                if (!obj.hasOwnProperty(name)) {
                    obj[name] = sent + received;
                }
                break;

            case 'Message':
                let sender = tokens[1];
                let receiver = tokens[2];
                obj[sender]++;
                obj[receiver]++;

                if (obj[sender] >= capacity) {
                    console.log(`${sender} reached capacity.`);
                    delete obj[sender]
                }
                else if (obj[receiver] >= capacity) {
                    console.log(`${receiver} reached capacity.`);
                    delete obj[receiver]
                }
                break;

            case 'Empty':
                let username = tokens[1];

                if (username === 'All') {
                    for (const prop of Object.getOwnPropertyNames(obj)) {
                        delete obj[prop];
                    }
                }
                else if (obj.hasOwnProperty(username)) {
                    delete obj[username];
                }

                break;
        }
    }

    let orderedNames = Object.entries(obj).sort((a, b) => a[1] - b[1] && b[0].localeCompare(a[0]));

    console.log(orderedNames);

}

solve([
    '20',
    'Add=Mark=3=9',
    'Add=Berry=5=5',
    'Add=Clark=4=0',
    'Empty=Berry',
    'Add=Blake=9=3',
    'Add=Michael=3=9',
    'Add=Amy=9=9',
    'Message=Blake=Amy',
    'Message=Michael=Amy',
    'Statistics'
])