class Solution {
public:
bool Find(int target, vector<vector<int> > array) {
int row = array.size();
int col = array[0].size();
int i = 0;
int j = col-1;
while (i < row && j >= 0) {
if(array[i][j] == target) {
return true;
} else if(array[i][j] > target) {
--j;
} else {
++i;
}
}
return false;
}
};

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