17 lines
297 B
C
17 lines
297 B
C
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#include <stdio.h>
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#include <stdlib.h>
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int main(int argc, char **argv) {
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int a;
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scanf("%d", &a);
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char c;
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int b[100];
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while ((c = getchar()) != '\n') {
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if (c >= 'A' && c <= 'Z' && b[c - 'A'] == 0) {
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printf("%c", c);
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b[c - 'A'] = 1;
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}
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}
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printf("\n");
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return 0;
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}
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