19 lines
376 B
C++
19 lines
376 B
C++
#include<cstdio>
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#include<cstring>
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#include<algorithm>
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using namespace std;
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char s[105]; int n;
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int main()
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{
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#ifdef local
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freopen("pro.in","r",stdin);
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#endif
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scanf("%s",s); n=strlen(s);
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if(n==1&&(s[0]=='0'||s[0]=='1')) { puts("0"); return 0; }
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int res=0;
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res+=n/2;
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if((n-1)%2==0)
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for(int i=1;i<n;i++) if(s[i]=='1') { res++; break; }
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printf("%d\n",res);
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return 0;
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} |