自己写的，求指教

#include<stdio.h>

int main()
{
    int piao[100000];
    int i;
    int a=0,b=0,c=0,cnt=0,cnt2=0;
    for(i=0 ; i<10000 ; i++){
        scanf("%d",&piao[i]);
        if(piao[i] == -1){
            break;
        }else if (piao[i] == 1) {
            a += 1;
            cnt += 1;
        }else if (piao[i] == 2) {
            b += 1;
            cnt += 1;
        }else if (piao[i] == 3) {
            c += 1;
            cnt += 1;
        }
        cnt2 += 1;
    }
    printf("A=%d\nB=%d\nC=%d\nTot=%d\n",a,b,c,cnt);
    if(a > (cnt2/2)){
        printf("A-yes");
    }else if (b > (cnt2/2)) {
        printf("B-yes");
    }else if (c > (cnt2/2)) {
        printf("C-yes");
    }else{
        printf("all-NO");
    }
    
    
    return 0;
}

}