Code
#include <iostream>using namespace std;int ans[2][2];int mid[2][2];void init( int a[2][2], int b[2][2], int mark )
{
int i, j, temp[2][2]; temp[0][0] = ( a[0][0] * b[0][0] + a[0][1] * b[1][0] ) % 10000; temp[0][1] = ( a[0][0] * b[0][1] + a[0][1] * b[1][1] ) % 10000; temp[1][0] = ( a[1][0] * b[0][0] + a[1][1] * b[1][0] ) % 10000; temp[1][1] = ( a[1][0] * b[0][1] + a[1][1] * b[1][1] ) % 10000; if ( mark == 1)
{ for ( i = 0; i < 2; i++ ) { for ( j = 0; j < 2; j++ ) { ans[i][j] = temp[i][j];
} } } if ( mark == 0 ) { for ( i = 0; i < 2; i++ ) { for ( j = 0; j < 2; j++ ) { mid[i][j] = temp[i][j]; } } }
}void cal ( int n ){ while ( n ) { if( n % 2 == 1 ) { init ( ans, mid, 1 ); } init ( mid, mid, 0 ); n /= 2; }}int main (){ int n; while ( scanf ( "%d", &n ) && n != -1 ) { ans[0][0] = 1; ans[0][1] = 0; ans[1][0] = 0; ans[1][1] = 1; mid[0][0] = 1; mid[0][1] = 1; mid[1][0] = 1; mid[1][1] = 0; cal (n); printf ( "%d\n", ans[0][1] ); } return 0;}