#include <stdio.h>                                                              
bool is_unsigned(unsigned int a) {                                              
    return true;                                                                
}                                                                              
bool is_unsigned(int a) {                                                       
    return false;                                                               
}                                                                               
int main() {                                                                    
    unsigned int a = 0;                                                         
    int b = 0;                                                                  
    printf("%d\n", is_unsigned(a + b));                                         
    return 0;                                                                   
}