{"problem":{"name":"Σ[k=0..10^100]floor(X／10^k)","description":{"content":"Find $\\displaystyle \\sum_{k=0}^{10^{100}} \\left \\lfloor \\frac{X}{10^k} \\right \\rfloor$.","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc233_e"},"statements":[{"statement_type":"Markdown","content":"Find $\\displaystyle \\sum_{k=0}^{10^{100}} \\left \\lfloor \\frac{X}{10^k} \\right \\rfloor$.\n\n## Constraints\n\n*   $X$ is an integer.\n*   $1 \\le X < 10^{500000}$\n\n## Input\n\nInput is given from Standard Input in the following format:\n\n$X$\n\n[samples]\n\n## Notes\n\n$\\lfloor A \\rfloor$ denotes the value of $A$ truncated to an integer.","is_translate":false,"language":"English"}],"meta":{"iden":"abc233_e","tags":[],"sample_group":[["1225","1360\n\nThe value we seek is $1225+122+12+1+0+0+\\dots+0=1360$."],["99999","111105\n\nBeware of carries."],["314159265358979323846264338327950288419716939937510","349065850398865915384738153697722542688574377708317\n\nThe values in input and output can both be enormous."]],"created_at":"2026-03-03 11:01:14"}}