Submission #1293321

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Source Code Expand

#include "iostream"
#include "climits"
#include "list"
#include "queue"
#include "stack"
#include "set"
#include "functional"
#include "algorithm"
#include "math.h"
#include "utility"
#include "string"
#include "map"
#include "unordered_map"
#include "iomanip"
#include "random"

using namespace std;
const long long int MOD = 1000000007;

int N,M;
set<int>S;

int main() {
	ios::sync_with_stdio(false);
	cin >> N>>M;
	for (int i = 0; i < N; i++) {
		int box;
		cin >> box;
		S.insert(box);
	}
	for (int i = 0; i < M; i++) {
		int box;
		cin >> box;
		S.insert(box);
	}
	cout << setprecision(15) << (long double)(N+M-S.size()) / (long double) S.size() << endl;
	return 0;
}

Submission Info

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