39 lines
637 B
C
39 lines
637 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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int get_prio (char c) {
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int r = (int) (c - 'a'+1);
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if (r > 0) return r;
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return r + 'A' - 7;
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}
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int main () {
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char cur[50];
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int half = 0;
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u_int64_t masks[3] = {0};
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int sum = 0;
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int j =0;
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while (fgets(cur,50,stdin) != NULL) {
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int i;
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for (i=0; i<strlen(cur)-1; i++) {
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masks[j] |= (1LL << get_prio(cur[i]));
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}
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if (j == 2) {
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u_int64_t mask = 0;
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mask = masks[0] & masks[1] & masks[2];
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for (int k=0; k<3; k++) masks[k] = 0;
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int k =-1;
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while (mask > 0) {
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k++;
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mask >>=1LL;
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}
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sum += k;
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j = -1;
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}
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j++;
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}
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printf("%d\n", sum);
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}
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