CF498D.Traffic Jams in the Land
普及/提高-
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题目描述
Some country consists of (n+1) cities, located along a straight highway. Let's number the cities with consecutive integers from 1 to n+1 in the order they occur along the highway. Thus, the cities are connected by n segments of the highway, the i -th segment connects cities number i and i+1 . Every segment of the highway is associated with a positive integer a_{i}>1 — the period of traffic jams appearance on it.
In order to get from city x to city y ( x<y ), some drivers use the following tactics.
Initially the driver is in city x and the current time t equals zero. Until the driver arrives in city y , he perfors the following actions:
- if the current time t is a multiple of ax , then the segment of the highway number x is now having traffic problems and the driver stays in the current city for one unit of time (formally speaking, we assign t=t+1 );
- if the current time t is not a multiple of ax , then the segment of the highway number x is now clear and that's why the driver uses one unit of time to move to city x+1 (formally, we assign t=t+1 and x=x+1 ).
You are developing a new traffic control system. You want to consecutively process q queries of two types:
- determine the final value of time t after the ride from city x to city y ( x<y ) assuming that we apply the tactics that is described above. Note that for each query t is being reset to 0 .
- replace the period of traffic jams appearing on the segment number x by value y (formally, assign ax=y ).
Write a code that will effectively process the queries given above.
输入格式
The first line contains a single integer n ( 1<=n<=105 ) — the number of highway segments that connect the n+1 cities.
The second line contains n integers a1,a2,...,an ( 2<=ai<=6 ) — the periods of traffic jams appearance on segments of the highway.
The next line contains a single integer q ( 1<=q<=105 ) — the number of queries to process.
The next q lines contain the descriptions of the queries in the format c , x , y ( c — the query type).
If c is character 'A', then your task is to process a query of the first type. In this case the following constraints are satisfied: 1<=x<y<=n+1 .
If c is character 'C', then you need to process a query of the second type. In such case, the following constraints are satisfied: 1<=x<=n , 2<=y<=6 .
输出格式
For each query of the first type output a single integer — the final value of time t after driving from city x to city y . Process the queries in the order in which they are given in the input.
输入输出样例
输入#1
10 2 5 3 2 3 5 3 4 2 4 10 C 10 6 A 2 6 A 1 3 C 3 4 A 3 11 A 4 9 A 5 6 C 7 3 A 8 10 A 2 5
输出#1
5 3 14 6 2 4 4