E - Snuke Line

https://atcoder.jp/contests/arc068/submissions/37072976

AtCoder/ARC068/E/E.cpp

@@ -0,0 +1,40 @@
+#include <iostream>
+#include <numeric>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+const int M = 1e5 + 5;
+
+int n, m, c[M], s[M];
+
+int main() {
+    std::ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    cin >> n >> m;
+
+    for (int i = 1, x, y; i <= n; i++) {
+        cin >> x >> y;
+
+        c[x--]++, c[y + 1]--;
+
+        for (int l = 1, r; l <= x; l = r + 1) {
+            r = std::min(x / (x / l), y / (y / l));
+
+            if (x / l < y / l) {
+                c[l]++;
+                c[r + 1]--;
+            }
+        }
+    }
+
+    std::partial_sum(c + 1, c + 1 + m, s + 1);
+
+    for (int i = 1; i <= m; i++) {
+        cout << s[i] << endl;
+    }
+
+    return 0;
+}