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- #include<bits/stdc++.h>
- using namespace std;
- int main()
- {
- char s[10001];
- int u=0, d=0, l=0, b=0, i;
- scanf("%[^\n]",s);
- int ln = strlen(s);
- for(i=0; i<ln; i+=2)
- {
- if(s[i] == 'U' && s[i+1] == 'U')
- {
- u++;
- }
- else if(s[i] == 'D' && s[i+1] == 'D')
- {
- d++;
- }
- else if(s[i] == 'L' && s[i+1] == 'R')
- {
- l++;
- }
- else if(s[i] == 'B' && s[i+1] == 'A')
- {
- b++;
- }
- }
- int mi = u;
- if(u>d)
- {
- mi = d;
- }
- else if(u>l)
- {
- mi = l;
- }
- else if(u>b)
- {
- mi = b;
- }
- printf("%d\n", mi);
- return 0;
- }
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