摘要： Every year the cows hold an event featuring a peculiar version of hopscotch that involves carefully jumping from rock to rock in a river. The exciteme 阅读全文

摘要： Description Farmer John has built a new long barn, with N (2 <= N <= 100,000) stalls. The stalls are located along a straight line at positions x1,... 阅读全文

摘要： Description Inhabitants of the Wonderland have decided to hold a regional programming contest. The Judging Committee has volunteered and has promised 阅读全文

摘要： Description There are many homeless cats in PKU campus. They are all happy because the students in the cat club of PKU take good care of them. Li lei 阅读全文

摘要： #include #include #include using namespace std; #define forn(i, n) for (int i = 0; i pii; const int N = 1000001; int n; set a[3]; int ans[N]; int main() { scanf("%d", &n); forn(i, n) ... 阅读全文