题目链接:
Vasya lives in a round building, whose entrances are numbered sequentially by integers from 1 to n. Entrance n and entrance 1 are adjacent.
Today Vasya got bored and decided to take a walk in the yard. Vasya lives in entrance a and he decided that during his walk he will move around the house b entrances in the direction of increasing numbers (in this order entrance n should be followed by entrance 1). The negative value of b corresponds to moving |b| entrances in the order of decreasing numbers (in this order entrance 1 is followed by entrance n). If b = 0, then Vasya prefers to walk beside his entrance.
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Help Vasya to determine the number of the entrance, near which he will be at the end of his walk.
The single line of the input contains three space-separated integers n, a and b (1 ≤ n ≤ 100, 1 ≤ a ≤ n, - 100 ≤ b ≤ 100) — the number of entrances at Vasya's place, the number of his entrance and the length of his walk, respectively.
Print a single integer k (1 ≤ k ≤ n) — the number of the entrance where Vasya will be at the end of his walk.
6 2 -5
3
5 1 3
4
3 2 7
3
The first example is illustrated by the picture in the statements.
题意:
n个entrances a为起点,b为步数,问最终在哪,b正是一个方向,负是一个方向;
思路:
水题,不想解释,居然最后挂在了system test 上;
AC代码:
/* 2014300227 659A - 49 GNU C++11 Accepted 15 ms 2172 KB */ #include <bits/stdc++.h> using namespace std; int a[105]; int main() { int n,a,b; scanf("%d%d%d",&n,&a,&b); queue<int>qu; int cnt=0; if(b>0) { for(int i=a;i<=n;i++) { qu.push(i); } for(int i=1;i<a;i++) { qu.push(i); } while(1) { qu.push(qu.front()); qu.pop(); cnt++; if(cnt>=b) { cout<<qu.front()<<endl; break; } } } else if(b<0) { b=-b; for(int i=a;i>0;i--) { qu.push(i); } for(int i=n;i>a;i--) { qu.push(i); } while(1) { qu.push(qu.front()); qu.pop(); cnt++; if(cnt>=b) { cout<<qu.front()<<endl; break; } } } else { cout<<a<<endl; } return 0; }