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Author: pranta2003

icpc_mock_TexProblem.cpp

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+/////////////////          PRANTA KUMER PANDIT            ///////////////
+//                      Test Case Less Template                       ||
+//                                                                    ||
+//      BANGLADESH  UNIVERSITY OF BUSINESS AND TECHNOLOGY             ||
+//                          INTAKE 52                                 ||
+//                      DEPARTMENT OF CSE                             ||
+//||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
+//                      So, WELCOME TO ISHAN'S PARADISE               //
+//                (-.-) Want to be a Secret tool of next ICPC  (-.-)  //
+
+#include <bits/stdc++.h>
+using namespace std;
+typedef long long ll;
+#define pb   push_back
+#define yes   cout<<"YES"<<endl
+#define no    cout<<"NO"<<endl
+#define all(x) (x).begin(), (x).end()
+#define gcd(a,b)      __gcd(a,b)
+#define lcm(a,b)  (a*b)/__gcd(a,b)
+#define optimize() ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
+void solve() {
+    long double pkp;
+    cin >> pkp;
+
+    const long double A = 12500.0L;
+    const long double B = 50000.0L;
+    const long double C = 150000.0L;
+
+    const long double limit = 1e-12L;
+
+    auto taxFromIncome = [&](long double I)->long double {
+        if (I <= A) return 0.0L;
+        if (I <= B) return (I - A) * 0.20L;
+        if (I <= 100000.0L) return (B - A) * 0.20L + (I - B) * 0.40L;
+        if (I <= 125000.0L) return (B - A) * 0.20L + (100000.0L - B) * 0.40L + (I - 100000.0L) * 0.60L;
+        if (I <= C) return (B - A) * 0.20L + (100000.0L - B) * 0.40L + (125000.0L - 100000.0L) * 0.60L + (I - 125000.0L) * 0.40L;
+        return (B - A) * 0.20L + (100000.0L - B) * 0.40L + (125000.0L - 100000.0L) * 0.60L + (C - 125000.0L) * 0.40L + (I - C) * 0.45L;
+    };
+
+    long double arkta = 0.0L;
+
+    if (pkp <= limit) {
+        arkta = 0.0L;
+    } else {
+        long double lo = 0.0L, hi = 1e18L;
+        if (pkp <= 47500.0L) hi = 1e6L;
+        else hi = 1e12L;
+
+        for (int iter = 0; iter < 200; ++iter) {
+            long double mid = (lo + hi) * 0.5L;
+            long double t = taxFromIncome(mid);
+            if (t < pkp) lo = mid;
+            else hi = mid;
+        }
+        arkta = (lo + hi) * 0.5L;
+    }
+
+    cout << fixed << setprecision(2) << arkta << "\n";
+}
+
+int main() {
+    optimize();
+    int lol;
+    cin >> lol;
+    while (lol--) {
+        solve();
+    }
+}
+
+//                                   THANKS                             //