Precreation contest files

misc/binary-search/p145sumg.cpp

@@ -0,0 +1,40 @@
+#include <bits/stdc++.h>
+#include <ios>
+using namespace std;
+
+int a[100000];
+int n, m;
+
+int checker(int k) {
+  int ret = 0;
+  for (int i = 0; i < n; i++) {
+    ret += k / a[i];
+  }
+  return ret;
+}
+
+int main() {
+  ios_base::sync_with_stdio(false);
+  cin.tie(NULL);
+  freopen("p145sumg.inp", "r", stdin);
+
+  cin >> n >> m;
+  int l = 1, r;
+  for (int i = 0; i < n; i++) {
+    cin >> a[i];
+    r = max(r, a[i]);
+  }
+  r *= m;
+
+  int res = r;
+  while (l < r) {
+    int mid = (l + r) / 2;
+    if (checker(mid) >= m) {
+      r = mid;
+      res = min(mid, res);
+    } else {
+      l = mid + 1;
+    }
+  }
+  cout << res << "\n";
+}