#include <stdio.h>
#include <stdlib.h>
int comparator(const void *a, const void *b) {
return (*(long long int *)a) - (*(long long int *)b);
}
int main ( int argc , char * argv[] ) {
long long int t;
char str[10000];
scanf("%lld" , &t);
while ( t-- ) {
long long int n , i;
scanf("%lld" , &n);
long long int * array = ( long long int * ) malloc ( n * sizeof( long long int ) );
for ( i = 0 ; i < n ; i++ ) {
scanf("%s %lld" , str , &array[i]);
}
qsort( array , n , sizeof(long long int) , comparator );
long long int sum = 0;
for ( i = 0 ; i < n ; i++ ) {
sum += abs((i+1)-array[i]);
}
printf("%lld\n" , sum);
}
return 0;
}
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