class Solution {

public:

    bool Find(int target, vector<vector<int> > array) {

        int rlen = array.size();

        if (rlen == ) return false;

        int clen = array[].size();

        if (clen == ) return false;

        int row = ;

        int col = clen - ;

        bool found = false;

        while (true) {

            if (row >= rlen || col < ) break;

            if (array[row][col] == target) {

                found = true;

                break;

            }

            if (array[row][col] < target) {

                row++;

            }

            else {

                col--;

            }

        }

        return found;

    }

};