标签:des style blog http color io os java ar
10 9999 1 1 1 1 1 1 1 1 1 1 20 500 1 0 1 0 1 0 1 0 1 0
45 104
#include"iostream" #include"stdio.h" #include"string.h" #include"algorithm" #include"queue" #include"vector" using namespace std; #define N 10 #define LL __int64 int M,f[N]; struct Mat { LL mat[N][N]; }; Mat operator *(Mat a,Mat b) { int i,j,k; Mat c; for(i=0;i<N;i++) { for(j=0;j<N;j++) { c.mat[i][j]=0; for(k=0;k<N;k++) { c.mat[i][j]+=(a.mat[i][k]*b.mat[k][j])%M; } } } return c; } int fun(Mat &a,int k) { int i; Mat ans; memset(ans.mat,0,sizeof(ans.mat)); k-=9; for(i=0;i<N;i++) ans.mat[i][i]=1; for(i=1;i<N;i++) a.mat[i][i-1]=1; while(k) { if(k&1) ans=ans*a; k>>=1; a=a*a; } LL s=0; for(i=0;i<N;i++) { s+=ans.mat[0][i]*f[N-i-1]%M; s%=M; } return s; } int main() { int k,i; Mat a; while(scanf("%d%d",&k,&M)!=-1) { memset(a.mat,0,sizeof(a.mat)); for(i=0;i<N;i++) { scanf("%I64d",&a.mat[0][i]); f[i]=i; } if(k<N) printf("%d\n",i%M); else printf("%d\n",fun(a,k)); } return 0; }
hdu 1757 A Simple Math Problem(矩阵快速幂)
标签:des style blog http color io os java ar
原文地址:http://blog.csdn.net/u011721440/article/details/39347817