#include <iostream>
using namespace std;
 
int main() {
	bool x1, x2, x3, x4, x5, x6, x7, x8, x9, x10;
	cin >> x1 >> x2 >> x3 >> x4 >> x5 >> x6 >> x7 >> x8 >> x9 >> x10;
	bool y= (x1||x2)^(x1||x3)^(x1||x4)^(x1||x5)^(x1||x6)^(x1||x7)^(x1||x8)^(x1||x9)^(x1||x10)^(x2||x3)^(x2||x4)^(x2||x5)^(x2||x6)^(x2||x7)^(x2||x8)^(x2||x9)^(x2||x10)^(x3||x4)^(x3||x5)^(x3||x6)^(x3||x7)^(x3||x8)^(x3||x9)^(x3||x10)^(x4||x5)^(x4||x6)^(x4||x7)^(x4||x8)^(x4||x9)^(x4||x10)^(x5||x6)^(x5||x7)^(x5||x8)^(x5||x9)^(x5||x10)^(x6||x7)^(x6||x8)^(x6||x9)^(x6||x10)^(x7||x8)^(x7||x9)^(x7||x10)^(x8||x9)^(x8||x10)^(x9||x10)^(x1||x2||x3)^(x1||x2||x4)^(x1||x2||x5)^(x1||x2||x6)^(x1||x2||x7)^(x1||x2||x8)^(x1||x2||x9)^(x1||x2||x10)^(x1||x3||x4)^(x1||x3||x5)^(x1||x3||x6)^(x1||x3||x7)^(x1||x3||x8)^(x1||x3||x9)^(x1||x3||x10)^(x1||x4||x5)^(x1||x4||x6)^(x1||x4||x7)^(x1||x4||x8)^(x1||x4||x9)^(x1||x4||x10)^(x1||x5||x6)^(x1||x5||x7)^(x1||x5||x8)^(x1||x5||x9)^(x1||x5||x10)^(x1||x6||x7)^(x1||x6||x8)^(x1||x6||x9)^(x1||x6||x10)^(x1||x7||x8)^(x1||x7||x9)^(x1||x7||x10)^(x1||x8||x9)^(x1||x8||x10)^(x1||x9||x10)^(x2||x3||x4)^(x2||x3||x5)^(x2||x3||x6)^(x2||x3||x7)^(x2||x3||x8)^(x2||x3||x9)^(x2||x3||x10)^(x2||x4||x5)^(x2||x4||x6)^(x2||x4||x7)^(x2||x4||x8)^(x2||x4||x9)^(x2||x4||x10)^(x2||x5||x6)^(x2||x5||x7)^(x2||x5||x8)^(x2||x5||x9)^(x2||x5||x10)^(x2||x6||x7)^(x2||x6||x8)^(x2||x6||x9)^(x2||x6||x10)^(x2||x7||x8)^(x2||x7||x9)^(x2||x7||x10)^(x2||x8||x9)^(x2||x8||x10)^(x2||x9||x10)^(x3||x4||x5)^(x3||x4||x6)^(x3||x4||x7)^(x3||x4||x8)^(x3||x4||x9)^(x3||x4||x10)^(x3||x5||x6)^(x3||x5||x7)^(x3||x5||x8)^(x3||x5||x9)^(x3||x5||x10)^(x3||x6||x7)^(x3||x6||x8)^(x3||x6||x9)^(x3||x6||x10)^(x3||x7||x8)^(x3||x7||x9)^(x3||x7||x10)^(x3||x8||x9)^(x3||x8||x10)^(x3||x9||x10)^(x4||x5||x6)^(x4||x5||x7)^(x4||x5||x8)^(x4||x5||x9)^(x4||x5||x10)^(x4||x6||x7)^(x4||x6||x8)^(x4||x6||x9)^(x4||x6||x10)^(x4||x7||x8)^(x4||x7||x9)^(x4||x7||x10)^(x4||x8||x9)^(x4||x8||x10)^(x4||x9||x10)^(x5||x6||x7)^(x5||x6||x8)^(x5||x6||x9)^(x5||x6||x10)^(x5||x7||x8)^(x5||x7||x9)^(x5||x7||x10)^(x5||x8||x9)^(x5||x8||x10)^(x5||x9||x10)^(x6||x7||x8)^(x6||x7||x9)^(x6||x7||x10)^(x6||x8||x9)^(x6||x8||x10)^(x6||x9||x10)^(x7||x8||x9)^(x7||x8||x10)^(x7||x9||x10)^(x8||x9||x10);
	cout << y;
	return 0;
}

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