#include <vector>
#include <iostream>
int main(void)
{
        std::vector<int> container = {11,3,5,6,200};    
        for (size_t i = 0; i < container.size(); ++i)
        {
        if(container[i]==5)
 
        printf("Position:" "[i+1]\n");
 
        }
        return 0;
        }