Submission #36978760

Source Code Expand

// Author: Ruhan Habib (ruhanhabib39@gmail.com)

#include <iostream>
#include <algorithm>
#include <numeric>
#include <vector>
#include <cassert>
using namespace std;

const long long MOD = 998244353LL;

const int MAXN = 2e5;

long long modpow (long long x, long long p) {
   long long res = 1;
   while (p > 0LL) {
      if (p & 1LL) res = res * x % MOD;
      p >>= 1LL;
      x = x * x % MOD;
   }
   return res;
}

long long modinv (long long x) {
   return modpow(x, MOD - 2);
}

long long dp[MAXN + 10];

void calc_dp (long long p) {
   long long r = p * modinv(100) % MOD;
   long long s = (1 + MOD - r) % MOD;

   dp[0] = 0;
   dp[1] = 1;
   for (int i = 2; i <= MAXN; i++) {
      dp[i] = (1 + r * dp[i-2] + s * dp[i-1]) % MOD;
   }
}

int main() {
   ios_base::sync_with_stdio(false);
   cin.tie(nullptr);
   cout.tie(nullptr);

   int n, p; cin >> n >> p;
   calc_dp(p);
   cout << dp[n] << "\n";
}

Submission Info

Submission Time
Task E - Critical Hit
User ruhanhabib39
Language C++ (GCC 9.2.1)
Score 500
Code Size 961 Byte
Status AC
Exec Time 9 ms
Memory 5188 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 500 / 500
Status
AC × 3
AC × 39
Set Name Test Cases
Sample example_00.txt, example_01.txt, example_02.txt
All example_00.txt, example_01.txt, example_02.txt, hand_00.txt, hand_01.txt, hand_02.txt, hand_03.txt, hand_04.txt, hand_05.txt, hand_06.txt, hand_07.txt, hand_08.txt, hand_09.txt, hand_10.txt, hand_11.txt, hand_12.txt, hand_13.txt, random_00.txt, random_01.txt, random_02.txt, random_03.txt, random_04.txt, random_05.txt, random_06.txt, random_07.txt, random_08.txt, random_09.txt, random_10.txt, random_11.txt, random_12.txt, random_13.txt, random_14.txt, random_15.txt, random_16.txt, random_17.txt, random_18.txt, random_19.txt, random_20.txt, random_21.txt
Case Name Status Exec Time Memory
example_00.txt AC 9 ms 5128 KiB
example_01.txt AC 4 ms 5064 KiB
example_02.txt AC 3 ms 5124 KiB
hand_00.txt AC 4 ms 5184 KiB
hand_01.txt AC 4 ms 5064 KiB
hand_02.txt AC 5 ms 5068 KiB
hand_03.txt AC 5 ms 5120 KiB
hand_04.txt AC 4 ms 5128 KiB
hand_05.txt AC 4 ms 5068 KiB
hand_06.txt AC 4 ms 5156 KiB
hand_07.txt AC 4 ms 5008 KiB
hand_08.txt AC 7 ms 5060 KiB
hand_09.txt AC 5 ms 5068 KiB
hand_10.txt AC 4 ms 5092 KiB
hand_11.txt AC 7 ms 5124 KiB
hand_12.txt AC 5 ms 5000 KiB
hand_13.txt AC 6 ms 5152 KiB
random_00.txt AC 7 ms 5156 KiB
random_01.txt AC 5 ms 5056 KiB
random_02.txt AC 4 ms 5060 KiB
random_03.txt AC 4 ms 5068 KiB
random_04.txt AC 4 ms 5128 KiB
random_05.txt AC 4 ms 5048 KiB
random_06.txt AC 4 ms 5152 KiB
random_07.txt AC 5 ms 5140 KiB
random_08.txt AC 3 ms 5124 KiB
random_09.txt AC 6 ms 5124 KiB
random_10.txt AC 3 ms 5188 KiB
random_11.txt AC 4 ms 5120 KiB
random_12.txt AC 4 ms 5156 KiB
random_13.txt AC 4 ms 4996 KiB
random_14.txt AC 4 ms 5152 KiB
random_15.txt AC 4 ms 5012 KiB
random_16.txt AC 6 ms 5156 KiB
random_17.txt AC 3 ms 5056 KiB
random_18.txt AC 5 ms 5120 KiB
random_19.txt AC 5 ms 5124 KiB
random_20.txt AC 5 ms 5116 KiB
random_21.txt AC 8 ms 5068 KiB