CCO 2015:https://cemc.math.uwaterloo.ca/contests/computing/past_ccc_contests/2015/index.html。
Hungry Fox:https://cemc.math.uwaterloo.ca/contests/computing/past_ccc_contests/2015/stage%202/day1.pdf
根据原题面,0≤Ti≤1090 \le T_i \le 10^90≤Ti≤109。