{"problem":{"name":"LRUD Instructions 2","description":{"content":"Takahashi is on a two-dimensional plane. Starting from the origin, he made $N$ moves. The $N$ moves are represented by a string of length $N$ as described below: *   Takahashi's coordinates after the","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc291_c"},"statements":[{"statement_type":"Markdown","content":"Takahashi is on a two-dimensional plane. Starting from the origin, he made $N$ moves.\nThe $N$ moves are represented by a string of length $N$ as described below:\n\n*   Takahashi's coordinates after the $i$\\-th move are:\n    \n    *   $(x+1,y)$ if the $i$\\-th character of $S$ is `R`;\n    *   $(x-1,y)$ if the $i$\\-th character of $S$ is `L`;\n    *   $(x,y+1)$ if the $i$\\-th character of $S$ is `U`; and\n    *   $(x,y-1)$ if the $i$\\-th character of $S$ is `D`,\n    \n    where $(x,y)$ is his coordinates before the move.\n    \n\nDetermine if Takahashi visited the same coordinates multiple times in the course of the $N$ moves (including the starting and ending points).\n\n## Constraints\n\n*   $1 \\leq N \\leq 2\\times 10^5$\n*   $N$ is an integer.\n*   $S$ is a string of length $N$ consisting of `R`, `L`, `U`, and `D`.\n\n## Input\n\nThe input is given from Standard Input in the following format:\n\n$N$\n$S$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"abc291_c","tags":[],"sample_group":[["5\nRLURU","Yes\n\nTakahashi's coordinates change as follows: $(0,0)\\to (1,0)\\to (0,0)\\to (0,1)\\to (1,1)\\to (1,2)$."],["20\nURDDLLUUURRRDDDDLLLL","No"]],"created_at":"2026-03-03 11:01:14"}}