baekjoon 20260130

code_study/Baekjoon/python/10768.py

@@ -0,0 +1 @@
+print((lambda m, d : "Before" if m == 1 else "After" if m > 2 else "Special" if d == 18 else "Before" if d < 18 else "After")(int(input()), int(input())))

code_study/Baekjoon/ts/16724.ts

@@ -0,0 +1,50 @@
+export {};
+const input = require("fs").readFileSync(0).toString().trim().split('\n');
+const [N, M]: number[] = input[0].split(" ").map(Number);
+let field: string[] = [];
+for(let i=1; i<=N; i++) field.push(input[i]);
+
+let parents: number[] = Array.from({length: N*M}, (_, i) => i);
+let rank: number[] = new Array(N*M).fill(0);
+const areaNum = (col: number, row: number): number => { return M*row + col; }
+
+const find = (x: number): number => {
+    if(x !== parents[x]) return parents[x] = find(parents[x]);
+    return parents[x]; 
+}
+
+const union = (x: number, y: number) => {
+    x = find(x);
+    y = find(y);
+
+    if(x===y) return;
+
+    if(rank[x] < rank[y]) {
+        const temp = x;
+        x = y;
+        y = temp;
+    }
+
+    parents[y] = x;
+
+    if(rank[x] === rank[y]) rank[x]++;
+}
+
+for(let x=0; x<M; x++) {
+    for(let y=0; y<N; y++) {
+        const arrow: string = field[y][x];
+        const curArea: number = areaNum(x,y);
+        let nxtArea: number = 0;
+        
+        if(arrow === 'D') nxtArea = areaNum(x,y+1);
+        else if(arrow === 'U') nxtArea = areaNum(x, y-1);
+        else if(arrow === 'L') nxtArea = areaNum(x-1, y);
+        else nxtArea = areaNum(x+1, y);
+
+        union(curArea, nxtArea);
+    }
+}
+
+let ans: number = 0;
+parents.forEach((v,i) => { if(v===i) ans += 1 });
+console.log(ans);