题目

原题链接：A. Arpa and a research in Mexican wave

题意

给出n个座位，k个人，问t时刻座位中有几个人。
如下所示：

• 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.

代码

#include<bits/stdc++.h>
using namespace std;
int main() {
    int n,k,t;
    cin>>n>>k>>t;
    if(t==0) {
    printf("0\n");
        return 0;
    }
    int tt=t%(n+k);
    if(tt<=k) {
        printf("%d\n",tt);
    } else if(tt>=n) {
        printf("%d\n",(n+k)-tt);
    } else {
        printf("%d\n",k);
    }
    return 0;
}