Eiffel的博客

#include #include #include #include using namespace std; #define MOD 1000000007 struct Mat{ int n,m; //行列 int mat[19][19]; }; Mat operator *(Mat a,Mat b){ //矩阵相乘 Mat c; memset(c.ma

String GrowthZibon just started his courses in Computer science. After having some lectures on programming courses he fell in love with strings. He started to play with strings and experiments on them.

Calculate the Function Time Limit: 2 Seconds      Memory Limit: 65536 KB You are given a list of numbers A1 A2 .. AN and M queries. For the i-th query: The query has two parameters Li and R