其他

Can you solve this equation?Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4834 Accepted Submission(s): 2259Problem DescriptionNow,given the equation 8*x^4 + 7*x^3 + 2*x^2 + 3*x + 6 == Y,can you

位元運算應用口訣 清零取反要用與，某位置一可用或 若要取反和交換，輕輕鬆鬆用異或 移位元運算 要點 1 它們都是雙目運算子，兩個運算分量都是整形，結果也是整形。     2 " < <" 左移：右邊空出的位上補0，左邊的位將從字頭擠掉，其值相當於乘2。     3 ">>"右移：右邊的位被擠掉。對於左邊移出的空位，如果是正數則空位補0，若為負數，可能補0或補1，這取決於所用的電腦系統。     4

最少攔截系統Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 11868 Accepted Submission(s): 4671Problem

FatMouse' TradeTime Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 32207 Accepted Submission(s): 10402Problem DescriptionFatMouse prepared M pounds of cat food, ready to trade with the cats guarding

Problem DescriptionLittle Valentine liked playing with binary trees very much. Her favorite game was constructing randomly looking binary trees with capital letters in the nodes.This is an example of one of her creations:

如果問題中各資料的範圍明確，那麼無窮大的設定不是問題，在不明確的情況下，很多程式員都取0x7fffffff作為無窮大，因為這是32-bit int的最大值。如果這個無窮大隻用於一般的比較（比如求最小值時min變數的初值），那麼0x7fffffff確實是一個完美的選擇，但是在更多的情況下，0x7fffffff並不是一個好的選擇。很多時候我們並不只是單純拿無窮大來作比較，而是會運算後再做比較，例如在大部分最短路徑演算法中都會使用的鬆弛操作：if (d[u]+w[u][v]<d[v]) d[v]

SleepingTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 125536/65536 K (Java/Others)Total Submission(s): 1514    Accepted Submission(s): 578Problem DescriptionZZZ is an enthusiastic ACMer and he spends lots of time on training. He always

龜兔賽跑Time Limit: 1000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 8513    Accepted Submission(s): 3271Problem

Break Standard WeightTime Limit: 2 Seconds      Memory Limit: 65536 KB The balance was the first mass measuring instrument invented. In its traditional form, it consists of a pivoted horizontal lever of equal length arms, called the beam, with a

TradeTime Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2817    Accepted Submission(s): 890Problem DescriptionRecently, lxhgww is addicted to stock, he finds some regular patterns after a few days'

#include <iostream>using namespace std;class test{private: int a,b;public: test(int aa,int bb){a=aa;b=bb;} void fun(test &t) { t.a=-t.a; cout<<t.a<<' '<<t.b<<endl; } void virtual show(

Mondriaan's DreamTime Limit: 3000MS Memory Limit: 65536KTotal Submissions: 9362 Accepted: 5409DescriptionSquares and rectangles fascinated the famous Dutch painter Piet Mondriaan. One night, after producing the drawings in his 'toilet series' (where

Islands and BridgesTime Limit: 4000MS Memory Limit: 65536KTotal Submissions: 7821 Accepted: 2003DescriptionGiven a map of islands and bridges that connect these islands, a Hamilton path, as we all know, is a path along the bridges such that it

TreeTime Limit: 1000MS Memory Limit: 30000KTotal Submissions: 7605 Accepted: 2216DescriptionGive a tree with n vertices,each edge has a length(positive integer less than 1001). Define dist(u,v)=The min distance between node u and v. Give an integer

Tree CuttingTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 3258 Accepted: 1914DescriptionAfter Farmer John realized that Bessie had installed a "tree-shaped" network among his N (1 <= N <= 10,000) barns at an incredible cost, he

在Qt開發中，經常毫不猶豫的將QString通過toAscii().data()轉換為char *類型，所以才讓我浪費了N多時間尋找bug。案例：在某個項目中，需要傳遞一個很長的字串，但通過toAscii().data()轉換得到的char

最近用到CURL，在開啟多個線程同時下載，並且又設定了timeout的時候，程式隨機報如下段錯誤。(gdb) bt#0  0x00002ac0a97a2ec2 in ?? () from /usr/lib64/libcurl.so.3#1  0x00002ac0a97a37dd in ?? () from /usr/lib64/libcurl.so.3#2  0x00002ac0a97a4755 in curl_mvsnprintf () from /usr/lib64/libcurl.so.3

DeBruijinTime Limit: 4000/2000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 319 Accepted Submission(s): 203Problem

DivisionTime Limit: 10000/5000 MS (Java/Others)    Memory Limit: 999999/400000 K (Java/Others)Total Submission(s): 2066    Accepted Submission(s): 817Problem DescriptionLittle D is really interested in the theorem of sets recently. There’s a problem

Tony's TourTime Limit: 1000MS Memory Limit: 30000KTotal Submissions: 2920 Accepted: 1343DescriptionA square township has been divided up into n*m(n rows and m columns) square plots (1<=N,M<=8),some of them are blocked, others are unblocked.