leetcode

Solution to some Leetcode problems written in C++
git clone git://git.dimitrijedobrota.com/leetcode.git
Log | Files | Refs | README | LICENSE
commit 8fb057d53b1d104444a79dbcf58e0d4e1ce5d839
parent 56a916cbf81aa9c1e8dffda9ba95336491bb5c5a
author Dimitrije Dobrota < mail@dimitrijedobrota.com >
date Fri, 31 Mar 2023 10:48:29 +0200

Daily Problem

Diffstat:
A Problems/1444.cpp | +++++++++++++++++++++++++++++++++++++
M README.md | +

2 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/ Problems/1444.cpp b/ Problems/1444.cpp

@@ -0,0 +1,37 @@

class Solution {
int n, m, mod = 1e9 + 7;
vector<vector<int>> count;
vector<vector<vector<int>>> dp = vector(10, vector(50, vector(50, -1)));

int rec(int row, int col, int left) {
if (count[row][col] == 0) return 0;
if (left == 0) return 1;
if (dp[left][row][col] != -1) return dp[left][row][col];

int &res = dp[left][row][col] = 0;
for (int i = row; i < n - 1; i++) {
if (count[row][col] - count[i + 1][col] <= 0) continue;
res = (res + rec(i + 1, col, left - 1)) % mod;
}

for (int i = col; i < m - 1; i++) {
if (count[row][col] - count[row][i + 1] <= 0) continue;
res = (res + rec(row, i + 1, left - 1)) % mod;
}

return res;
}

public:
int ways(vector<string> &pizza, int k) {
n = pizza.size(), m = pizza[0].size();
count = vector<vector<int>>(n + 1, vector<int>(m + 1, 0));

for (int i = n - 1; i >= 0; i--)
for (int j = m - 1; j >= 0; j--)
count[i][j] = count[i + 1][j] + count[i][j + 1] - count[i + 1][j + 1] +
(pizza[i][j] == 'A');

return rec(0, 0, k - 1);
}
};

diff --git a/ README.md b/ README.md

@@ -422,6 +422,7 @@ for solving problems.

| 1436 | Easy | [Destination City](Problems/1436.cpp) |
| 1438 | Medium | [Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit](Problems/1438.cpp) |
| 1443 | Medium | [Minimum Time to Collect All Apples in a Tree](Problems/1443.cpp) |
| 1444 | Hard | [Number of Ways of Cutting a Pizza](Problems/1444.cpp) |
| 1462 | Medium | [Course Schedule IV](Problems/1462.cpp) |
| 1466 | Medium | [Reorder Routes to Make All Paths Lead to the City Zero](Problems/1466.cpp) |
| 1470 | Easy | [Shuffle the Array](Problems/1470.cpp) |