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.

制約

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

例

入力：
seconds = 7325

期待される出力：
expected = "2h 2m 5s"

入力：
long long seconds = 7325;

期待される出力：
std::string expected = "2h 2m 5s";

入力：
long seconds = 7325;

期待される出力：
string expected = "2h 2m 5s";

入力：
seconds = 120

期待される出力：
expected = "2m"

入力：
long long seconds = 120;

期待される出力：
std::string expected = "2m";

入力：
long seconds = 120;

期待される出力：
string expected = "2m";

参考資料

この課題はCodeUtility用に調整されています。上記の説明と制約に従ってください。

• #11 Hours, Minutes, Seconds