43 lines
586 B
C
43 lines
586 B
C
#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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unsigned short unqlen(char *s)
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{
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char up[26] = {}, low[26] = {}, c;
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unsigned short i, len = strlen(s);
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for (i = 0; i < len; i++) {
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c = s[i];
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if (islower(c)) {
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low[c - 97]++;
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if (low[c - 97] > 1)
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return i;
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} else {
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up[c - 65]++;
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if (up[c - 65] > 1)
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return i;
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}
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}
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return i;
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}
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int main()
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{
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char s[50000];
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scanf("%s", s);
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unsigned short i, max = 1, val;
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for (i = 0; i < strlen(s) - max; i++) {
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val = unqlen(s + i);
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if (val > max)
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max = val;
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}
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printf("%hd\n", max);
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return 0;
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}
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