commit 8615f659314ffba580cc6f0a275548e5fad50cbe
parent 7164935335ae81c4e3a6786178b73f22fa2e997a
Author: Dimitrije Dobrota <mail@dimitrijedobrota.com>
Date: Mon, 2 Oct 2023 23:44:44 +0000
Improved Daily Problem and 1 Random Problems
Diffstat:
3 files changed, 55 insertions(+), 0 deletions(-)
diff --git a/Problems/1583.cpp b/Problems/1583.cpp
@@ -0,0 +1,34 @@
+class Solution {
+ static int position[501][501];
+ bitset<500> unhappy;
+
+ void is_unhappy(const int x, const int y, const int u, const int v) {
+ if (position[x][u] < position[x][y] && position[u][x] < position[u][v]) {
+ unhappy.set(x), unhappy.set(u);
+ }
+ }
+
+ public:
+ int unhappyFriends(const int n, const vector<vector<int>> &preferences,
+ const vector<vector<int>> &pairs) {
+ for (int i = 0; i < n; i++) {
+ for (int j = 0; j < n - 1; j++) {
+ position[i][preferences[i][j]] = j;
+ }
+ }
+
+ for (int i = 0; i < n / 2; i++) {
+ const int x = pairs[i][0], y = pairs[i][1];
+ for (int j = i + 1; j < n / 2; j++) {
+ const int u = pairs[j][0], v = pairs[j][1];
+ is_unhappy(x, y, u, v);
+ is_unhappy(x, y, v, u);
+ is_unhappy(y, x, u, v);
+ is_unhappy(y, x, v, u);
+ }
+ }
+ return unhappy.count();
+ }
+};
+
+int Solution::position[501][501];
diff --git a/Problems/2038.cpp b/Problems/2038.cpp
@@ -0,0 +1,19 @@
+class Solution {
+ public:
+ bool winnerOfGame(const string &colors) {
+ int a = 0, b = 0, i = 0;
+ while (i < colors.size()) {
+ int count = 0;
+ if (colors[i] == 'A') {
+ while (i < colors.size() && colors[i] == 'A')
+ i++, count++;
+ if (count > 2) a += count - 2;
+ } else {
+ while (i < colors.size() && colors[i] == 'B')
+ i++, count++;
+ if (count > 2) b += count - 2;
+ }
+ }
+ return a > b;
+ }
+};
diff --git a/README.md b/README.md
@@ -649,6 +649,7 @@ for solving problems.
| 1575 | Medium | [Count All Possible Routes](Problems/1575.cpp) |
| 1578 | Medium | [Minimum Time to Make Rope Colorful](Problems/1578.cpp) |
| 1579 | Hard | [Remove Max Number of Edges to Keep Graph Fully Traversable](Problems/1579.cpp) |
+| 1583 | Medium | [Count Unhappy Friends](Problems/1583.cpp) |
| 1584 | Medium | [Min Cost to Connect All Points](Problems/1584.cpp) |
| 1600 | Medium | [Throne Inheritance](Problems/1600.cpp) |
| 1601 | Hard | [Maximum Number of Achievable Transfer Requests](Problems/1601.cpp) |
@@ -733,6 +734,7 @@ for solving problems.
| 1992 | Medium | [Find All Groups of Farmland](Problems/1992.cpp) |
| 2023 | Medium | [Number of Pairs of Strings With Concatenation Equal to Target](Problems/2023.cpp) |
| 2024 | Medium | [Maximize the Confusion of an Exam](Problems/2024.cpp) |
+| 2038 | Medium | [Remove Colored Pieces if Both Neighbors are the Same Color](Problems/2038.cpp) |
| 2039 | Medium | [The Time When the Network Becomes Idle](Problems/2039.cpp) |
| 2043 | Medium | [Simple Bank System](Problems/2043.cpp) |
| 2044 | Medium | [Count Number of Maximum Bitwise-OR Subsets](Problems/2044.cpp) |
