Submission #2441395

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Source Code Expand

*N);
    long ans = 0;
    int cnt = 0;

    foreach (e; E) {
        if (uf.find(e[0]) == uf.find(e[1])) continue;
        uf.unite(e[0], e[1]);
        ans += e[2];
        cnt += 1;
        if (cnt == K-1) {
            ans.writeln;
            return;
        }
    }

    writeln(-1);
}


class UnionFind {
    int N;
    int[] table;
    long[] cost;

    this(int n) {
        N = n;
        table = new int[](N);
        fill(table, -1);
        cost = new long[](N);
    }

    int find(int x) {
        return table[x] < 0 ? x : (table[x] = find(table[x]));
    }

    void unite(int x, int y) {
        x = find(x);
        y = find(y);
        if (x == y) return;
        if (table[x] > table[y]) swap(x, y);
        table[x] += table[y];
        table[y] = x;
        cost[x] += cost[y];
    }
}

Submission Info

Compile Error

./Main.d(1): Error: declaration expected, not '*'
./Main.d(5): Error: declaration expected, not 'foreach'
./Main.d(5): Error: no identifier for declarator E
./Main.d(5): Error: declaration expected, not ')'
./Main.d(7): Error: function declaration without return type. (Note that constructors are always named 'this')
./Main.d(7): Error: no identifier for declarator uf.unite(e[0], e[1])
./Main.d(8): Error: no identifier for declarator ans
./Main.d(8): Error: declaration expected, not '+='
./Main.d(9): Error: no identifier for declarator cnt
./Main.d(9): Error: declaration expected, not '+='
./Main.d(10): Error: declaration expected, not 'if'
./Main.d(12): Error: declaration expected, not 'return'
./Main.d(13): Error: unrecognized declaration