Codeforces 851A && Round #432 Div. 2 A. Arpa and a research in Mexic

A. Arpa and a research in Mexican wave

time limit per test

1 second

memory limit per test

256 megabytes

input

standard input

output

standard output

Arpa is researching the Mexican wave.

There are n spectators in the stadium, labeled from1 ton. They start the Mexican wave at time0.

• At time 1, the first spectator stands.
• At time 2, the second spectator stands.
• ...
• At time k, the k-th spectator stands.
• At time k + 1, the (k + 1)-th spectator stands and the first spectator sits.
• At time k + 2, the (k + 2)-th spectator stands and the second spectator sits.
• ...
• At time n, the n-th spectator stands and the (n - k)-th spectator sits.
• At time n + 1, the (n + 1 - k)-th spectator sits.
• ...
• At time n + k, the n-th spectator sits.

Arpa wants to know how many spectators are standing at time t.

Input

The first line contains three integers n,k,t (1 ≤ n ≤ 10⁹,1 ≤ k ≤ n,1 ≤ t < n + k).

Output

Print single integer: how many spectators are standing at time t.

Examples

Input

10 5 3

Output

3

Input

10 5 7

Output

5

Input

10 5 12

Output

3

Note

In the following a sitting spectator is represented as -, a standing spectator is represented as ^.

• At t = 0  ---------- number of standing spectators = 0.
• At t = 1  ^--------- number of standing spectators = 1.
• At t = 2  ^^-------- number of standing spectators = 2.
• At t = 3  ^^^------- number of standing spectators = 3.
• At t = 4  ^^^^------ number of standing spectators = 4.
• At t = 5  ^^^^^----- number of standing spectators = 5.
• At t = 6  -^^^^^---- number of standing spectators = 5.
• At t = 7  --^^^^^--- number of standing spectators = 5.
• At t = 8  ---^^^^^-- number of standing spectators = 5.
• At t = 9  ----^^^^^- number of standing spectators = 5.
• At t = 10 -----^^^^^ number of standing spectators = 5.
• At t = 11 ------^^^^ number of standing spectators = 4.
• At t = 12 -------^^^ number of standing spectators = 3.
• At t = 13 --------^^ number of standing spectators = 2.
• At t = 14 ---------^ number of standing spectators = 1.
• At t = 15 ---------- number of standing spectators = 0.

题目大意：有n个观众，给你一个k（不懂怎么解释....），再给你一个时间t，问t时刻有多少人站起来。

水题，找个规律就行了

#include
#include
using namespace std;
int main(){
    int n,k,t;
    while(cin>>n>>k>>t){
		if(tn) cout<