include

include

using namespace std;

struct Time {
int hours;
int minutes;
int seconds;
};

Time addSeconds(Time t, int secondsToAdd) {
t.seconds += secondsToAdd;

// Convert seconds overflow to minutes
t.minutes += t.seconds / 60;
t.seconds %= 60;

// Convert minutes overflow to hours
t.hours += t.minutes / 60;
t.minutes %= 60;

// Handle overflow for hours (如果超过24小时，则归零)
if (t.hours >= 24) {
    t.hours %= 24;
}

return t;

}

int main() {
Time t;
int n;

cout << "请输入时间（格式：小时 分钟 秒）：";
cin >> t.hours >> t.minutes >> t.seconds;

cout << "请输入要增加的秒数（小于60）：";
cin >> n;

if (n >= 60 || n < 0) {
    cout << "输入的秒数无效，请输入一个小于60的秒数。" << endl;
    return 1;
}

Time result = addSeconds(t, n);

cout << "再过 " << n << " 秒后的时间是：" << endl;
cout << setw(2) << setfill('0') << result.hours << ":"
     << setw(2) << setfill('0') << result.minutes << ":"
     << setw(2) << setfill('0') << result.seconds << endl;

return 0;

}