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#include <iostream>

namespace {
    using std::cout;
    constexpr size_t SIZE = 100;
}

int main() {
    for (size_t w = 1; w <= SIZE; ++w) {
        if (w % 2 == 1 && w < SIZE) {
            cout << '1';
            for (size_t k = 1; k < SIZE; ++k)
                cout << '0';
            cout << '\n';
        } else if (w % 2 == 0 && w < SIZE) {
            for (size_t k = 1; k < SIZE; ++k)
                cout << '1';
            cout << '0';
            cout << '\n';
        } else {
            cout << '0';
            for (size_t k = 1; k < SIZE; ++k)
                cout << '1';
            cout << '\n';
        }        
    }
}