#include <iostream>
#include <string>
void print(int v)
{
std::cout<<"int:"<<v<<std::endl;
}
void print(bool v)
{
std::cout<<"bool:"<<v<<std::endl;
}
void print(std::string v)
{
std::cout<<"std::string v:"<<v<<std::endl;
}
int main()
{
print(1);
print(true);
print("Hello world");
}
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