Difference of Clustering Problem Description Given two clustering algorithms, the old and the new, you want to find the difference between their results. A clustering algorithm takes many member entities as input and partition them into clusters. In…
题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=4715 Difference Between Primes Description All you know Goldbach conjecture.That is to say, Every even integer greater than 2 can be expressed as the sum of two primes. Today, skywind present a new conje…
Difference Time Limit: 6000/3000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 62 Accepted Submission(s): 19 Problem Description Little Ruins is playing a number game, first he chooses two positive integers y an…
Difference of Languages Time Limit: 1000ms Memory Limit: 32768KB This problem will be judged on HDU. Original ID: 548764-bit integer IO format: %I64d Java class name: Main A regular language can be represented as a deterministic finite automaton…
Difference Between Primes Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 860 Accepted Submission(s): 278 Problem Description All you know Goldbach conjecture.That is to say, Every even integer gr…
Difference Between Primes Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 528 Accepted Submission(s): 150 Problem Description All you know Goldbach conjecture.That is to say, Every even inte…
Difference Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65535/65535 K (Java/Others)Total Submission(s): 581 Accepted Submission(s): 152 Problem Description A graph is a difference if every vertex vi can be assigned a real number ai and…
Bit Magic Problem Description Yesterday, my teacher taught me about bit operators: and (&), or (|), xor (^). I generated a number table a[N], and wrote a program to calculate the matrix table b[N][N] using three kinds of bit operator. I thought my ac…
这是通化邀请赛的题,当时比赛的时候还完全没想法呢,看来这几个月的训练还是有效果的... 题意要求(1) |ai| < T for all i (2) (vi, vj) in E <=> |ai - aj| >= T.由于(1)条件的存在,所以(2)条件能成立当且仅当ai和aj一正一负.由此可见,图中某条路上的元素正负值分别为正->负->正->负...显然当图中存在奇环的时候是无解的.判断奇环用二分染色,color[i]=0表示假设i节点未被染色,1表示假设i节…
The war Problem Description In the war, the intelligence about the enemy is very important. Now, our troop has mastered the situation of the enemy's war zones, and known that these war zones can communicate to each other directly or indirectly throug…
Removed Interval Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1703 Accepted Submission(s): 558 Problem Description Given a sequence of numbers A=a1,a2,…,aN , a subsequence b1,b2,…,bk of A…
Removed Interval Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 1086 Accepted Submission(s): 392 Problem Description Given a sequence of numbers A=a1,a2,…,aN, a subsequence b1,b2,…,bk of A i…
题目链接 题意 : 给出一个 x 和 k 问有多少个 y 使得 x = f(y, k) - y .f(y, k) 为 y 中每个位的数的 k 次方之和.x ≥ 0 分析 : f(y, k) - y = x ≥ 0 满足条件的 y 最多不超过 10 位 这个并不知道怎么证.网上有很多结论证明.仔细推敲过后发现都是错的 可能需要手动打表模拟一下吧...... 变化一下式子 x = f(a, k) - a + f(b, k) - b * (1e5) x - f(a, k) + a = f(b, k)…