第二行包含n个正整数,表示输入序列。
对于30%的数据,n<=1000;
对于50%的数据,n<=30000;
对于100%的数据,1 <=n<=100000,1<=ai<=10^9
5 1 2 2 1 2
-1 -2 0 1 1
2016年真题精选
1834,1835,1836,2267,2268,2269,2270,2271,2272,2386
1834,1835,1836,2267,2268,2269,2270,2271,2272,2386
1834,1835,1836,2267,2268,2269,2270,2271,2272,2386
1834,1835,1836,2267,2268,2269,2270,2271,2272,2386