I just shared because no other C solutions were shared.
The procedure is decsribed in problem definition. Uncomment print statements for debugging.
The procedure is decsribed in problem definition. Uncomment print statements for debugging.


```c []
bool isNonDecreasing(int* nums, int numsSize) {
    for (int i = 1; i < numsSize; i++) {
        if (nums[i] < nums[i - 1]) {return false;}
    }
    return true;
}

int minPairIndex(int* nums, int numsSize) {
    int index = 1;
    int sum = 1<<15;
    for (int i = 1; i < numsSize; i++) {
        if (nums[i] + nums[i - 1] < sum) {
            sum = nums[i] + nums[i - 1];
            index = i;
        }
    }
    return index;
}

void removeElement(int *array, int index, int array_length) {
   for(int i = index; i < array_length - 1; i++) array[i] = array[i + 1];
}

/*
void printArray(int* nums, int numsSize) {
    for (int i = 0; i < numsSize; i++) {
        printf("%d ", nums[i]);
    }
    printf("\n");
}
*/

int minimumPairRemoval(int* nums, int numsSize) {
    int operations = 0;

    while (!isNonDecreasing(nums, numsSize)) {
        operations++;
        int ind = minPairIndex(nums, numsSize);
        int swap = nums[ind] + nums[ind - 1];

        // printf("ind = %d, swap = %d\n", ind, swap);
        // printArray(nums, numsSize);
        
        nums[ind - 1] = swap;
        removeElement(nums, ind, numsSize);
        numsSize--;
    }
    return operations;
}
```
['C']