int count = 0;
double sum = 0;
for(int[] arr : scores) {
for(int n : arr) {
sum += n;
count ++;
}
double average = sum/count;
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韬韬蒙塔基
int count = 0;
double sum = 0;
for(int[] arr : scores) {
for(int n : arr) {
sum += n;
count ++;
}
}
double average = sum/count;