整体二分+树状数组套Treap,时间复杂度$O(n\log^3n)$. #include<cstdio> #include<cstdlib> #include<algorithm> #define N 100010 using namespace std; int n,m,tot,i,X0,Y0,X1,Y1,cq,bx[N],by[N],bz[N],ans[N],tmp,C,D;char op[8]; struct P{ int a,b,c,d,k,p; P(){} P…
题目链接: 传送门 Cells Not Under Attack time limit per test:2 second memory limit per test:256 megabytes Description Vasya has the square chessboard of size n × n and m rooks. Initially the chessboard is empty. Vasya will consequently put the rooks on t…
#!/usr/bin/perl## PadBuster v0.3 - Automated script for performing Padding Oracle attacks# Brian Holyfield - Gotham Digital Science (labs@gdssecurity.com)## Credits to J.Rizzo and T.Duong for providing proof of concept web exploit# techniques and S.V…
B. Cells Not Under Attack time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Vasya has the square chessboard of size n × n and m rooks. Initially the chessboard is empty. Vasya will consequen…
http://www.ush.it/2009/07/26/php-filesystem-attack-vectors-take-two/ Did you enjoyed our previous "PHP filesystem attack vectors" research? This is the second part and continuation of that paper and highlight new ways to evade filters using some…
http://www.ush.it/2009/02/08/php-filesystem-attack-vectors/ On Apr 07, 2008 I spoke with Kuza55 and Wisec about an attack I found some time before that was a new attack vector for filesystem functions (fopen, (include|require)[_once]?, file_(put|get)…
