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#include "leetcode.h"
class Solution {
public:
bool checkIfPangram(string sentence) {
set<int> s;
for (auto &i : sentence)
s.insert(i);
return s.size() == 26;
}
};
int main() {
Solution obj;
if (obj.checkIfPangram("thequickbrownfoxjumpsoverthelazydog"))
cout << "true";
else
cout << "false";
}
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