AIRM-All custom test cases give correct answer but on submission one of the test cases keeps failing

general
1

include <stdio.h>

int main(void) {
// your code goes here
int t;
scanf(“%d”, &t);

for(t;t>0;t--){
    int max=0;
    int n;
    scanf("%d", &n);
    
    int d[n];
    int a[n];
    int tcounter=0;
    int times[n][2];
    int tf=0;
    
    for (int c=0; c<n;c++){
        tf=0;
        scanf("%d", &a[c]);
        for (int z=0; z<=tcounter;z++){
            if (a[c]==times[z][0]){
                tf=1;
                
                times[z][1] +=1;
                
            }
        }
        if (tf!=1){
            times[tcounter][0]=a[c];
            times[tcounter][1]=1;
            tcounter+=1;
            tf=0;
        }
        tf=0;
    }
    for (int c=0; c<n;c++){
        tf=0;
        scanf("%d", &d[c]);
        for (int z=0; z<=tcounter;z++){
            if (d[c]==times[z][0]){
                tf=1;
                times[z][1] +=1;
                
            }
        }
        if (tf!=1){
            times[tcounter][0]=d[c];
            times[tcounter][1]=1;
            tcounter+=1;
            tf=0;
        }
        tf=0;
    }
    for (int c=0; c<tcounter;c++){
        if (max<times[c][1]){
            max= times[c][1];
        }
    }
    
   // for (int c=0; c<n;c++){
   //     scanf("%d", &a[c]);
   // }
    
    
    printf("%d\n", max);
}

return 0;

}