#include "iostream"
#include "climits"
#include "list"
#include "queue"
#include "stack"
#include "set"
#include "functional"
#include "algorithm"
#include "string"
#include "map"
#include "iomanip"
#include "random"

using namespace std;

const long long int MOD = 1000000007;
const long double EPS = 0.00000001;

long long int N, M, K, W, H, L, R;



int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	cin >> N >> M;
	M *= -1;
	cout << N - M << endl;
	return 0;
}