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#include <iostream>
#include <vector>
#include <utility>
#include <string>
using namespace std;

int main() 
{
	using Pair_str = pair<string, string>;
	
	vector<Pair_str> v1 = {
		{"Hello ", "world!"},
		{"Bye ", "world!" }
	};
	
	using Vec_str = vector<string>;
	vector<Vec_str> v2 = {
		{"1", "2", "3"},
		{"q", "w", "e", "r", "t", "y"}
	};
}
Success #stdin #stdout 0s 4532KB
stdin
Standard input is empty
stdout
Standard output is empty