Dungeon Princess Time : Space : 12345678910111213int Solution::calculateMinimumHP(vector<vector<int> > &A) { int n = A.size(), m = A[0].size(); vector<vector<int>> dp(n + 1, vector<int>(m + 1, INT_MAX)); dp[n][m-1] = dp[n-1][m] = 1; for(int i = n - 1; i >= 0; i--) { for(int j = m - 1; j >= 0; j--) { int hp = min(dp[i+1][j], dp[i][j+1]) - A[i][j]; dp[i][j] = hp <= 0 ? 1 : hp; } } return dp[0][0];}