Language: C++

#include<stdio.h>
#define MAX 100000
#define SENTINEL 2000000000
struct Card{
	char suit;
	int value;
};

int A[MAX], n;
struct Card L[MAX / 2 + 2], R[MAX / 2 + 2];

void merge(struct Card A[],int n, int left, int mid, int right){
	int n1 = mid - left;
	int n2 = right - mid;
	int i,j,k;
	for (i = 0; i < n1; i++){
		L[i] = A[left + i];
	}
	for (i = 0; i < n2; i++){
		R[i] = A[mid + i];
	}
	L[n1].value = SENTINEL;
	R[n2].value = SENTINEL;
	i = 0;
	j = 0;
	for (k = left; k < right; k++){
		if (L[i].value <= R[j].value){
			A[k] = L[i];
			i = i + 1;
		}
		else{
			A[k] = R[j];
			j = j + 1;
		}
	}
}

void mergeSort(struct Card A[], int n, int left, int right){
	int mid;
	if (left + 1 < right){
		mid = (left + right) / 2;
		mergeSort(A, n, left, mid);
		mergeSort(A, n, mid, right);
		merge(A, n, left, mid, right);
	}
}

int partition(strcut Card A[],int p, int r){
	struct Card tmp,x = A[r];
	int j,i = p - 1;
	for (j = p; j < r; j++){
		if (A[j].value <= x.value){
			i = i + 1;
			tmp = A[i];
			A[i] = A[j];
			A[j] = tmp;
		}
	}
	tmp = A[i+1];
	A[i+1] = A[r];
	A[r] = tmp;
	return i + 1;
}

void quickSort(struct Card A[], int n, int p, int r){
	int q;
	if (p < r){
		q = partition(A, n, p, r);
		quickSort(A, n, p, q - 1);
		quickSort(A, n, q + 1, r);
	}
}

int main(){
	int i,j,v;
	char S[10];
	struct Card A[MAX],B[MAX];
	scanf("%d", &n);
	for (i = 0; i < n; i++){
		scanf("%s %d", S, &v);
		A[i].suit = B[i].suit = S[0];
		A[i].value = B[i].value = v;
	}
	quickSort(A, n, 0, n);
	mergeSort(B, n, 0, n - 1);
	for (i = 0; i < n; i++){
		if (A[i].suit != B[i].suit){
			stable = 0;
			break;
		}
	}
	if (stable == 1){
		printf("Stable\n");
	}
	else{
		parintf("Not Stable\n");
	}
	for (i = 0; i < n; i++){
		printf("%c %d\n", B[i].suit, B[i].value);
	}
	return 0;
}

Compiler output:
a.cc:48:15: error: 'strcut' was not declared in this scope; did you mean 'struct'?
   48 | int partition(strcut Card A[],int p, int r){
      |               ^~~~~~
      |               struct
a.cc:48:31: error: expected primary-expression before 'int'
   48 | int partition(strcut Card A[],int p, int r){
      |                               ^~~
a.cc:48:38: error: expected primary-expression before 'int'
   48 | int partition(strcut Card A[],int p, int r){
      |                                      ^~~
a.cc:48:43: error: expression list treated as compound expression in initializer [-fpermissive]
   48 | int partition(strcut Card A[],int p, int r){
      |                                           ^
a.cc: In function 'void quickSort(Card*, int, int, int)':
a.cc:68:30: error: 'partition' cannot be used as a function
   68 |                 q = partition(A, n, p, r);
      |                     ~~~~~~~~~^~~~~~~~~~~~
a.cc: In function 'int main()':
a.cc:88:25: error: 'stable' was not declared in this scope; did you mean 'mutable'?
   88 |                         stable = 0;
      |                         ^~~~~~
      |                         mutable
a.cc:92:13: error: 'stable' was not declared in this scope; did you mean 'mutable'?
   92 |         if (stable == 1){
      |             ^~~~~~
      |             mutable
a.cc:96:17: error: 'parintf' was not declared in this scope; did you mean 'printf'?
   96 |                 parintf("Not Stable\n");
      |                 ^~~~~~~
      |                 printf