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- #include<bits/stdc++.h>
- using namespace std;
- int main() {
- int t;
- cin >> t;
- while(t--) {
- int n, m;
- cin >> n >> m;
- int a[n][m];
- for(int i = 0; i < n; i++)
- for(int j = 0; j < m; j++)
- cin >> a[i][j];
- int ans = n * m * 10;
- for(int d = 0; d < 10; d++) {
- int temp = 0;
- for(int i = 0; i < n; i++)
- for(int j = 0; j < m; j++)
- temp += abs(a[i][j] - d);
- ans = min(ans, temp);
- }
- cout << ans << "\n";
- }
- return 0;
- }
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