제출 #694663

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
694663	2023-02-04 07:56:48	cig32	Boat (APIO16_boat)	C++17	36 / 100	2079 ms	12116 KiB

boat

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#include "bits/stdc++.h"
#define int long long
#define double long double
using namespace std;
mt19937_64 rng((int) std::chrono::steady_clock::now().time_since_epoch().count());
int rnd(int x, int y) {
  return uniform_int_distribution<int>(x, y)(rng);
}
const int MAXN = 2e5 + 10;
const int MOD = 1e9 + 7;
int bm(int b, int p) {
  if(p==0) return 1;
  int r = bm(b, p/2);
  if(p & 1) return (((r*r) % MOD) * b )% MOD;
  return (r*r) % MOD;
}
int inv(int b) {
  return bm(b, MOD - 2);
}
int invfac[505];
int nCr(int n, int r) {
  if(n < r) return 0;
  if(r > n-r) r = n-r;
  if(r == 0) return 1;
  int ans = invfac[r];
  for(int i=n-r+1; i<=n; i++) ans = (ans * i) % MOD;
 
 
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