Hours, Minutes, and Seconds

Split a duration into hours, minutes, and seconds. Write units as h, m, and s, in that order, with one space between units. Omit any zero-valued unit, except that zero seconds is written as 0s.

Implement format_duration(seconds).

Input

seconds: The total duration in seconds.

Output

Return the formatted duration, for example 2h 2m 5s.

제약 조건

0 ≤ seconds ≤ 1,000,000,000. Hours may exceed 23; this is a duration, not a time of day.

예시

입력:
seconds = 7325

예상 출력:
expected = "2h 2m 5s"

입력:
long long seconds = 7325;

예상 출력:
std::string expected = "2h 2m 5s";

입력:
long seconds = 7325;

예상 출력:
string expected = "2h 2m 5s";

입력:
seconds = 120

예상 출력:
expected = "2m"

입력:
long long seconds = 120;

예상 출력:
std::string expected = "2m";

입력:
long seconds = 120;

예상 출력:
string expected = "2m";

참고 자료

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• #11 Hours, Minutes, Seconds