function solve(arr) {
    var silver = 0,
        gold = 0,
        diamonds = 0;
    for (var i = 0; i < arr.length; i++) {
        var str = arr[i];
        var regex = /mine\s*.*?-\s*(silver|gold|diamonds)\s*:\s*(\d+)\s*/;
        if (!regex.test(str)) {
            continue;
        }
        var split = str.match(regex);
        var ammount = parseInt(split[2]);
        var material = split[1];

        switch (material) {
            case 'silver':
                silver += ammount;
                break;
            case 'gold':
                gold += ammount;
                break;
            case 'diamonds':
                diamonds += ammount;
                break;
        }
    }
    console.log('*Silver: %d', silver);
    console.log('*Gold: %d', gold);
    console.log('*Diamonds: %d', diamonds);

}
solve(["mine bobovdol - gold: 10",
    "mine - diamonds: 5",
    'mine colas - wood: 10',
    'mine myMine - silver:  14',
    'mine silver:14 - silver: 14'
]);