#include <stdio.h>
 
int main(int argc, char** argv) {
    int a, i, j, c = 0;
    int vetor[a];
    for (i = 0; i < a; i++) {
    }
    for (i = 0; i < a; i++) {
        for (j = i + 1; j < a; j++) {
            if (vetor[i] == vetor[j]) {
                c++;
            }
        }
    }
    return 0;
}
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