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// unordered_map::at
#include <iostream>
#include <string>
#include <unordered_map>
int main ()
{
std::unordered_map<std::string,int> mymap = {
{ "Mars", 3000},
{ "Saturn", 60000},
{ "Jupiter", 70000 } };
mymap.at("Mars") = 3396;
mymap.at("Saturn") += 272;
mymap.at("Jupiter") = mymap.at("Saturn") + 9638;
for (auto& x: mymap) {
std::cout << x.first << ": " << x.second << std::endl;
}
return 0;
}
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