Submission #303126

#	Time	Username	Problem	Language	Result	Execution time	Memory
303126		llaki	Connecting Supertrees (IOI20_supertrees)	Java	11 / 100	385 ms	56392 KiB

supertrees

public class supertrees {
    int construct(int[][] p) {
        int n = p.length;
        if (areAllOnes(p)) {
            return constructForAllOnes(n);
        }
        int[][] answer = new int[n][n];

        grader.build(answer);
        return 1;
    }

    boolean areAllOnes(int[][] p) {
        for (int i = 0; i < p.length; i++) {
            for (int j = 0; j < p[i].length; j++) {
                if (p[i][j] != 1) return false;
            }
        }
        return true;
    }

    int constructForAllOnes(int n) {
        int[][] res = new int[n][n];
        for (int i = 0; i < n - 1; i++) {
            res[i][i + 1] = 1;
            res[i + 1][i] = 1;
        }
        grader.build(res);
        return 1;
    }
}

• Subtask 1: 11 / 11
• Subtask 2: 0 / 10
• Subtask 3: 0 / 19
• Subtask 4: 0 / 35
• Subtask 5: 0 / 21
• Subtask 6: 0 / 4