Upload ABC400 codes

AtCoder/ABC_400/C.cpp

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+#include <bits/stdc++.h>
+#define lo long long
+#define INF INT_MAX
+#define LLM LONG_LONG_MAX
+#define endl "\n"
+
+using namespace std;
+/*
+    toothless. #17
+    @fredcss_dev
+*/
+
+
+signed main() {
+    int N;
+    cin >> N;
+
+    int cnt = 0;
+    int mx = 0;
+    int current = 1;
+
+    while (current <= N) {
+        current *= 2;
+        mx++;
+    }
+    mx--;
+
+    for (int e = 1; e <= mx; ++e) {
+        int m = N / (1 << e);
+        if (m < 1) {
+            continue;
+        }
+        int mx2 = sqrt(m);
+        int cnt = (mx2 + 1) / 2;
+        cnt += cnt;
+    }
+
+    cout << cnt << endl;
+
+    return 0;
+}