POJ 3070 + 51Nod 1242 大斐波那契数取余
#include "iostream" #include "cstdio" using namespace std; class matrix { public: int a[2][2]; matrix() { a[0][0]=a[1][0]=a[0][1]=1; a[1][1]=0; } }; matrix multi(matrix a,matrix b) { matrix temp; int i,j,k; for(i=0;i<2;i++) for(j=0;j<2;j++) { temp.a[i][j]=0; for(k=0;k<2;k++) temp.a[i][j]+=(a.a[i][k]*b.a[k][j]); temp.a[i][j]%=10000; } return temp; } matrix power(int n) { matrix temp,s; temp.a[0][1]=temp.a[1][0]=0; temp.a[0][0]=temp.a[1][1]=1; while(n!=0) { if(n%2!=0) temp=multi(temp,s); s=multi(s,s); n=n/2; } return temp; } int main() { int n; while(~scanf("%d",&n)&&(n!=-1)) { matrix t=power(n); cout<<t.a[1][0]<<endl; } return 0; }
#include "iostream" #include "cstdio" using namespace std; #define MOD 1000000009 #define LL long long class matrix { public: LL a[2][2]; matrix() { a[0][0]=a[1][0]=a[0][1]=1; a[1][1]=0; } }; matrix multi(matrix a,matrix b) { matrix temp; LL i,j,k; for(i=0;i<2;i++) for(j=0;j<2;j++) { temp.a[i][j]=0; for(k=0;k<2;k++) temp.a[i][j]+=(a.a[i][k]*b.a[k][j]); temp.a[i][j]%=MOD; } return temp; } matrix power(LL n) { matrix temp,s; temp.a[0][1]=temp.a[1][0]=0; temp.a[0][0]=temp.a[1][1]=1; while(n!=0) { if(n%2!=0) temp=multi(temp,s); s=multi(s,s); n=n/2; } return temp; } int main() { LL n; while(~scanf("%lld",&n)&&(n!=-1)) { matrix t=power(n); cout<<t.a[1][0]<<endl; } return 0; }