codeforce #163 div2

//cf #163 div 2 A// http://codeforces.com/contest/266/problem/A#include<stdio.h>#include<iostream>using namespace std;char a[55];int main(){  int n,i;  //freopen("input.txt","r",stdin);  while(scanf("%d%*c",&n)!=EOF){           int sum=0;      for(i=0;i<n;i++)       scanf("%c",a+i);      for(i=0;i<n-1;i++)        if(a[i]==a[i+1])           sum++;      printf("%d\n",sum);  }  return 0;}//cf #163 div 2 B// http://codeforces.com/contest/266/problem/B#include<stdio.h>char a[100];int main(){   // freopen("input.txt","r",stdin); int n,t,i;  while(scanf("%d%d",&n,&t)!=EOF){     scanf("%s",a);    while(t--){     for(i=0;i<n;)     if(a[i]=='B'&&a[i+1]=='G'){        a[i]='G';        a[i+1]='B';        i+=2;    }    else i++;}    printf("%s\n",a);} return 0;}