Submission #3711966


Source Code Expand

#include <iostream>
#include <algorithm>
#include <vector>
#include <cstdio>
#include <string>
#include <set>
#include <map>
#include <queue>
#include <stack>
#include <cmath>
#include <functional>
#include <numeric>
#include <iomanip>
#define fi first
#define se second
#define fcout(n) cout<<fixed<<setprecision((n))
#define cinl(str) getline(cin,(str))
using namespace std;
bool value(int y,int x,int R,int C){return 0<=y&&y<R&&0<=x&&x<C;}
typedef pair<int,int> pii;
typedef long long ll;
typedef vector<int> vi;
typedef vector<long long > vll;
typedef vector< vi > vvi;
double pie=acos(-1);
int INF=1000000007;
int dx[4] = { 0,-1,0,1 };
int dy[4] = { -1,0,1,0 };



int main() {
	int n;
	cin >> n;
	map<int,int> m;
	int p=0,q=0,r=0,s=0,t=0;
	int ans;
	
	for(int i=2;i<n+1;i++){
		int x=i;

		for(int j=2;j*j<n+1;j++){
			while(x%j==0){
				//素因数jの数をカウント
				m[j]++; 
				x /= j;
			}
		}

		//nが小さいときの数え漏れ防止
		if( x!= 1) m[x]++;

	}

	for(int i=2;i<n+1;i++){
		//p^74
		if(m[i]>=74) p++;
		//p^24
		if(m[i]>=24) q++;
		//p^14
		if(m[i]>=14) r++;
		//p^4
		if(m[i]>=4) s++;
		//p^2
		if(m[i]>=2) t++;
	}

	//(p^74の数)+(p^24*q^2の数)+(p^14*q^4の数)+(p^4*q^4*r^2の数)
	//自身を選んだり、(p,q),(q,p)を別のものと数えないようにする
	//((pの数)*(p以外のqの数)*t)/2(pとqを入れ替えたもの重複分)-((pの数)*(p以外のqの数)分p,qからtを選んでしまった分)
	ans = p + (q*t-q) + (r*s-r) + (s*(s-1)*t-2*s*(s-1))/2;
	cout<<ans<<endl;

}

Submission Info

Submission Time
Task D - 756
User Cytus
Language C++14 (GCC 5.4.1)
Score 400
Code Size 1608 Byte
Status AC
Exec Time 1 ms
Memory 256 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 400 / 400
Status
AC × 3
AC × 20
Set Name Test Cases
Sample a01, a02, a03
All a01, a02, a03, b04, b05, b06, b07, b08, b09, b10, b11, b12, b13, b14, b15, b16, b17, b18, b19, b20
Case Name Status Exec Time Memory
a01 AC 1 ms 256 KiB
a02 AC 1 ms 256 KiB
a03 AC 1 ms 256 KiB
b04 AC 1 ms 256 KiB
b05 AC 1 ms 256 KiB
b06 AC 1 ms 256 KiB
b07 AC 1 ms 256 KiB
b08 AC 1 ms 256 KiB
b09 AC 1 ms 256 KiB
b10 AC 1 ms 256 KiB
b11 AC 1 ms 256 KiB
b12 AC 1 ms 256 KiB
b13 AC 1 ms 256 KiB
b14 AC 1 ms 256 KiB
b15 AC 1 ms 256 KiB
b16 AC 1 ms 256 KiB
b17 AC 1 ms 256 KiB
b18 AC 1 ms 256 KiB
b19 AC 1 ms 256 KiB
b20 AC 1 ms 256 KiB