Submission #1063913

#	Time	Username	Problem	Language	Result	Execution time	Memory
1063913		kunzaZa183	Hexagonal Territory (APIO21_hexagon)	C++17	9 / 100	1 ms	604 KiB

hexagon

#include "hexagon.h"

#include <bits/stdc++.h>
#include <cstdint>
using namespace std;
#define int long long

int32_t draw_territory(int32_t N, int32_t A, int32_t B, vector<int32_t> D,
                       vector<int32_t> L) {

  const int mod = 1e9 + 7;
  int step = L[0];
  int numoftrig = (step + 1) * (step + 2) / 2 % mod;

  function<int(int, int)> logpow = [&](int a, int b) {
    if (b == 0)
      return 1LL;
    int x = logpow(a, b / 2);
    if (b % 2 == 1)
      return x * x % mod * a % mod;
    return x * x % mod;
  };

  int coefd = (step + 1) * (step + 2) % mod * (2 * step + 3) % mod *
              logpow(6, mod - 2) % mod;
  coefd -= numoftrig;
  coefd += mod;
  coefd %= mod;

  return (coefd * B % mod + A * numoftrig % mod) % mod;
}

• Subtask 1: 3 / 3
• Subtask 2: 6 / 6
• Subtask 3: 0 / 11
• Subtask 4: 0 / 12
• Subtask 5: 0 / 15
• Subtask 6: 0 / 19
• Subtask 7: 0 / 18
• Subtask 8: 0 / 16