#include<bits/stdc++.h>
using namespace std;
const bool a = true;

int main(){
	static unsigned long long b = 2;
	cout << (a + 1) * b++;
	return 0;
}

#include<bits/stdc++.h>
using namespace std;

int main(){
	int a = -0, b = 2147483647, ans = 0;
	if (a && b) ans = a < 0 ? 1 : 0;
	else if (a || b) ans = a ? 0 : 1;
	else ans;
	return 0;
}

#include<bits/stdc++.h>
using namespace std;

int main() {
	int i = 0, c = 0;
	for ( ; 1 ; ++i) {  
		if (c) break;
		do cout << "#"; while (0);
		c = i < 3 ? 0 : 1;
	} 
}

#include <bits/stdc++.h>
using namespace std;  

int main() {  
    int num[4] = {1,2,2,7};
    do {  
    	for (auto n : num) cout << n; 
    	cout << "\n";
    } while (next_permutation(num, num + sizeof(num)/ sizeof(num[0]))); 
    return 0;
}

#include <bits/stdc++.h>
using namespace std;  

int main() { 
	string str ("2r2ee");
	str = str + str;
	str.resize(6);
	str.shrink_to_fit();
	cout << str.capacity();
    return 0;
}

#include <bits/stdc++.h>  
using namespace std; 

int n = 9, m, ans[9], used[11] = {0};  
void pass(int index) {  
    if(index == n) {  
        int a = ans[0] * 100 + ans[1] * 10 + ans[2], b = ans[3] * 100 + ans[4] * 10 + ans[5], c = ans[6] * 100 + ans[7] * 10 + ans[8];
        if(a+b == c) cout << a << "+" << b << "=" << c << endl;  
        return;  
    }  
    for(int i = 1; i <= n; i++) {  
        if(used[i] == 1) continue;  
        ans[index] = i;  
        used[i] = 1;  
        pass(index + 1);  
        used[i] = 0;  
    }  
}  

int main(){
    pass(0);  
}