Create 2577_Minimum_Time_to_Visit_a_Cell_In_a_Grid.cpp

2577_Minimum_Time_to_Visit_a_Cell_In_a_Grid.cpp

@@ -0,0 +1,50 @@
+// ███████╗  █████╗  ███╗   ██╗ ██████╗   █████╗  ██████╗  ██████╗  ██╗  ██╗
+// ██╔════╝ ██╔══██╗ ████╗  ██║ ██╔══██╗ ██╔══██╗ ██╔══██╗ ██╔══██╗ ██║  ██║
+// ███████╗ ███████║ ██╔██╗ ██║ ██║  ██║ ███████║ ██████╔╝ ██████╔╝ ███████║
+// ╚════██║ ██╔══██║ ██║╚██╗██║ ██║  ██║ ██╔══██║ ██╔═██╗  ██╔══██╗ ██╔══██║
+// ███████║ ██║  ██║ ██║ ╚████║ ██████╔╝ ██║  ██║ ██║  ██╗ ██████╔╝ ██║  ██║
+// ╚══════╝ ╚═╝  ╚═╝ ╚═╝  ╚═══╝ ╚═════╝  ╚═╝  ╚═╝ ╚═╝  ╚═╝ ╚═════╝  ╚═╝  ╚═╝
+#pragma GCC optimize("Ofast", "inline", "ffast-math", "unroll-loops","no-stack-protector")
+#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native", "f16c")
+auto init = []() {
+    ios_base::sync_with_stdio(false);
+    cin.tie(nullptr);
+    cout.tie(nullptr);
+    return 'c';
+}();
+class Solution {
+public:
+    int minimumTime(vector<vector<int>>& grid) {
+        if (grid[0][1] > 1 && grid[1][0] > 1) {
+            return -1;
+        }
+        int m = grid.size(), n = grid[0].size();
+        int dist[m][n];
+        memset(dist, 0x3f, sizeof dist);
+        dist[0][0] = 0;
+        using tii = tuple<int, int, int>;
+        priority_queue<tii, vector<tii>, greater<tii>> pq;
+        pq.emplace(0, 0, 0);
+        int dirs[5] = {-1, 0, 1, 0, -1};
+        while (1) {
+            auto [t, i, j] = pq.top();
+            pq.pop();
+            if (i == m - 1 && j == n - 1) {
+                return t;
+            }
+            for (int k = 0; k < 4; ++k) {
+                int x = i + dirs[k], y = j + dirs[k + 1];
+                if (x >= 0 && x < m && y >= 0 && y < n) {
+                    int nt = t + 1;
+                    if (nt < grid[x][y]) {
+                        nt = grid[x][y] + (grid[x][y] - nt) % 2;
+                    }
+                    if (nt < dist[x][y]) {
+                        dist[x][y] = nt;
+                        pq.emplace(nt, x, y);
+                    }
+                }
+            }
+        }
+    }
+};