The first line of input contains two positive integers l and b, where l (1≤l≤2 \cdot 10^5) is the number of lights and b (0≤b≤2 \cdot l) is the number of buttons. The second line of input is a string of l characters, all either R, G, or B, where the ith character is the initial color of the ith light. The next b lines describe the buttons. Each of these lines begins with an integer k (1≤k≤l), the number of lights controlled by this button. Then k distinct integers follow, the lights controlled by this button. The lights are indexed from 1 to l, inclusive. Each light appears at most twice across all buttons.

#8290 upload - done - how_to_reg -

Turning Red timer 3s memory 1024MB

#8290

Turning Red 3s 1024MB