A region in Malaysia underwent significant hydrological changes over a 20-year period due to shifts in climate patterns. Initially, the area had an infiltration and loss rate of 0.45 cm/h, with a unit hydrograph exhibiting a peak discharge of 380 m^3/s after 4 hours, and a base time of 10 hours. Following climate shifits, the infiltration rate decreased to 0.22 cm/h as a result of modified rainfall distribution and higher evapotranspiration rates. As a consequence, the unit hydrograph's peak discharge increased to 550 m/s, occurring within 2 hours, and the base time shortened to 6 hours. Calculate the Direct Runoff Hydrograph (DRH) before and after the climate change, assuming two consecutive rainfall events occurred, with 3 cm of rain in the first hour and 4 cm in the following hour. The unit hydrograph 4 is triangular in shape.