zoj 1171 Sorting the Photos

#include<iostream>#include<cstdlib>using namespace std;char photo[ 100001 ];int  numbe[ 100001 ];int main(){    int n,m;cin >> n;    while ( n -- )    {        cin >> m;        for ( int i = 0 ; i < m ; ++ i ) cin >> photo[ i ];        numbe[ m-1 ] = 0;        for ( int i = m-2 ; i >= 0 ; -- i ) if ( photo[ i ] == photo[ i+1 ] )     numbe[ i ] = numbe[ i+1 ]; else {     numbe[ i ] = numbe[ i+1 ] + 1; }        cout << numbe[ 0 ] << endl;        if ( n ) cout << endl;    }    return 0;}