I keep getting TLE on my solution and idk why can someone help me understand? problem: 1822G1 - Magic Triples (Easy Version) my sub:257235493

So i have been practicing 1400 rated problems since i got to pupil i have solved so far 27 problems , i got stuck and had to read tutorials for about 12 of them and the rest i solved by myself , Now , is this ratio good? should i move on to 1500 rated problems? or should i solve more 1400 problems , also i have solved 29 problems rated 1200 after that i switched to 1400 rate because 1200 rate got too easy for me and i could find the solution to any 1200 problem but i don't feel the same about 1400 rated problems by the way i skipped problems that was solvable only using dp or graph since i didnt learn them yet and people suggested me to leave them and foucse on binary search and greedy instade , despite that i can't say i can solve any 1400 rated problem at the same time i can solve between 50%-60% of them.

So what do you think should i switch or stay at 1400 until i find them too easy?

So i have been practicing every day for the last 2 months i manged to reach pupil in the last Global round and sloved 3 problems i did really bad in the last div3 since i was upset about something but i manged to solve 5 problems outside the contest Now, what should i do? i dont know any graph or dp or binary search(i only know basic binary) or bitwise and i'am not really good at math problems , so should i start learning this topics? or just keep solving random problems ? i'am currently solving problem at rating (1400-1200) i will cut off the 1200 problems since i solved the last 15 problems without getting stuck at all so do i foucse on something or just grind 1400 rating ? thanks.