For problem statement at 1000-1999/1300-1399/1360-1369/1366/problemC.txt this is a correct solution, but verifier at 1000-1999/1300-1399/1360-1369/1366/verifierC.go ends with output mismatch
expected:
1
7
7
1
3
1
1
3
2
4
1
6
8
1
5
11
12
3
3
6
5
2
1
3
2
4
3
9
1
1
8
2
4
4
6
2
6
0
6
1
6
6
5
4
2
8
5
6
2
1
6
10
11
0
1
5
3
5
3
3
1
4
3
3
2
1
4
3
1
1
1
2
3
2
3
4
6
9
0
8
2
5
6
5
12
1
10
2
12
3
1
7
11
9
1
7
11
1
5
3

got:
1
7
7
0
0
1
1
3
2
4
1
6
5
1
5
7
9
2
2
6
3
2
1
1
2
3
3
9
1
0
8
1
4
4
3
2
2
0
6
1
6
3
5
3
1
8
5
2
2
1
6
10
11
0
1
5
1
5
3
3
0
4
3
3
0
1
4
3
1
1
0
1
3
0
3
4
4
9
0
4
1
3
3
3
12
1
10
2
7
1
1
7
9
9
1
4
8
1
1
3

exit status 1 can you fix the verifier? ```go
package main

import (
	"bufio"
	"fmt"
	"os"
)

func main() {
	var t int
	reader := bufio.NewReader(os.Stdin)
	fmt.Fscan(reader, &t)

	for k := 0; k < t; k++ {
		var n, m int
		fmt.Fscan(reader, &n, &m)
		grid := make([][]int, n)
		for i := 0; i < n; i++ {
			grid[i] = make([]int, m)
			for j := 0; j < m; j++ {
				fmt.Fscan(reader, &grid[i][j])
			}
		}

		totalChanges := 0
		totalDist := n + m - 2
		
		// We iterate through distances from 0 to totalDist / 2 - 1
		// For each distance d, the symmetric distance is totalDist - d
		// We treat the set of cells at distance d and totalDist - d as one group
		// that must have the same value.
		for d := 0; d < totalDist/2; d++ {
			cnt0 := 0
			cnt1 := 0

			// Process cells at distance d
			// Cells (r, c) satisfy r + c = d + 2 (using 1-based indexing)
			// Iterate over all valid rows r
			for r := 1; r <= n; r++ {
				c := d + 2 - r
				if c >= 1 && c <= m {
					if grid[r-1][c-1] == 0 {
						cnt0++
					} else {
						cnt1++
					}
				}
			}

			// Process cells at the symmetric distance totalDist - d
			d2 := totalDist - d
			for r := 1; r <= n; r++ {
				c := d2 + 2 - r
				if c >= 1 && c <= m {
					if grid[r-1][c-1] == 0 {
						cnt0++
					} else {
						cnt1++
					}
				}
			}

			if cnt0 < cnt1 {
				totalChanges += cnt0
			} else {
				totalChanges += cnt1
			}
		}

		// If totalDist is odd, there is a middle layer that pairs with itself.
		// Since x == x is always true, no changes are needed for the middle layer.
		
		fmt.Println(totalChanges)
	}
}
```