#include <iostream>
#include <functional>
 
void foo(int a, int b, int c) {
    std::cout << "a: " << a << "\n" "b: " << b << "\n" "c: " << c << "\n";
}
 
int main() {
    auto foo_normal = std::bind(foo, std::placeholders::_1, std::placeholders::_2, std::placeholders::_3);
    auto foo_reversed = std::bind(foo, std::placeholders::_3, std::placeholders::_2, std::placeholders::_1);
    auto foo_with_a1 = std::bind(foo, 1, std::placeholders::_1, std::placeholders::_2);
    auto foo_with_b2 = std::bind(foo, std::placeholders::_1, 2, std::placeholders::_2);
    auto foo_with_c3 = std::bind(foo, std::placeholders::_1, std::placeholders::_2, 3);
    auto foo_with_a1c3 = std::bind(foo, 1, std::placeholders::_1, 3);
    auto foo_with_a1b2c3 = std::bind(foo, 1, 2, 3);
 
    foo_normal(1, 2, 3);
    foo_reversed(3, 2, 1);
    foo_with_a1(2, 3);
    foo_with_b2(1, 3);
    foo_with_c3(1, 2);
    foo_with_a1c3(2);
    foo_with_a1b2c3();
 
    return 0;
}

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