D. 0-1 MST Ujan has a lot of useless stuff in his drawers, a considerable part of which are his math notebooks: it is time to sort them out. ...
Description 題庫鏈接 給你一張 n 個點的完全圖,其中有 m 條邊長度為 ,其余全為 。問你這張圖的最小生成樹為多少。 leq n leq , leq m leq min left frac n n , right Solution 容易發現,答案就是補圖連通塊個數 。喜聞樂見的抄板子了... 解析詳見 Codeforces E Connected Components Code in ...
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D. 0-1 MST Ujan has a lot of useless stuff in his drawers, a considerable part of which are his math notebooks: it is time to sort them out. ...
Codeforces Round #599 (Div. 2) D. 0-1 MST Description Ujan has a lot of useless stuff in his drawers, a considerable part of which are his math ...
Description 題庫鏈接 給你 \(k\) 個盒子,第 \(i\) 個盒子中有 \(n_i\) 個數,第 \(j\) 個數為 \(x_{i,j}\)。現在讓你進行 \(k\) 次操作,第 ...
題目鏈接 \(Description\) 有一張\(n\)個點的完全圖,每個點的權值為\(a_i\),兩個點之間的邊權為\(a_i\ xor\ a_j\)。求該圖的最小生成樹。 \(n\leq2* ...
Discription Ehab is interested in the bitwise-xor operation and the special graphs. Mahmoud gave hi ...
題目大意: 一個數列是尖銳的 當且僅當存在一個位置k使得 a[1]<a[2]<a[3]<...<a[k] 且 a[k]>a[k+1]>a[k+2]>... ...
鏈接:http://codeforces.com/contest/1068 A - Birthday - [計算題] 題意:一共 $N$ 種硬幣,我已經有其中 $K$ 種,我的 $M$ 個朋友每人送我等數量的硬幣,且送來的每一枚硬幣都不屬於同一種,要求最后我收到手上的硬幣至少有 $L$ 種 ...
題意是說給你一串數組,其中-1代表未知,求相鄰兩個數之差的絕對值最小,-1可以由k賦值,先考慮-1的情況,把k解出來,轉換一下,就是絕對值之差最小情況,|k-a|,|k-b|,|k-c|,要使最大的最小,也就是在兩個端點找,|k-min|,|k-max|,由數形結合可知,當k為min與max的中點 ...