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36 lines (32 loc) · 958 Bytes
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Triangle.cpp
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36 lines (32 loc) · 958 Bytes
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class Solution {
public:
int minimumTotal(vector<vector<int>>& triangle) {
int m = triangle.size();
int n = triangle[triangle.size() - 1].size();
vector<vector<int>> dp(m, vector<int>(n, INT_MAX));
dp[m - 1] = triangle[m - 1];
for (int i = m - 2; i >= 0; i--)
{
for (int j = 0; j < triangle[i].size(); j++)
{
dp[i][j] = min(dp[i][j], min(dp[i + 1][j], dp[i + 1][j + 1]) + triangle[i][j]);
}
}
return dp[0][0];
}
};
class Solution {
public:
int minimumTotal(vector<vector<int>>& triangle) {
int m = triangle.size();
vector<int> dp = triangle.back();
for (int layer = m - 2; layer >= 0; layer--)
{
for (int i = 0; i < triangle[layer].size(); i++)
{
dp[i] = min(dp[i], dp[i + 1]) + triangle[layer][i];
}
}
return dp[0];
}
};