#include <stdio.h>
#include <stdlib.h>
 
int main() {
    int **A, **B, **Sum;
    int rows, cols, i, j;
 
    // Step 1: Input matrix dimensions
    printf("Enter number of rows: ");
    scanf("%d", &rows);
    printf("Enter number of columns: ");
    scanf("%d", &cols);
 
    // Step 2: Allocate memory for matrices A, B, and Sum
    A = (int**) malloc(rows * sizeof(int*));
    B = (int**) malloc(rows * sizeof(int*));
    Sum = (int**) malloc(rows * sizeof(int*));
 
    if (A == NULL || B == NULL || Sum == NULL) {
        printf("Memory allocation failed!\n");
        return 1;
    }
 
    for (i = 0; i < rows; i++) {
        A[i] = (int*) malloc(cols * sizeof(int));
        B[i] = (int*) malloc(cols * sizeof(int));
        Sum[i] = (int*) malloc(cols * sizeof(int));
 
        if (A[i] == NULL || B[i] == NULL || Sum[i] == NULL) {
            printf("Memory allocation failed for row %d!\n", i);
            return 1;
        }
    }
 
    // Step 3: Input matrix A
    printf("\nEnter elements of Matrix A:\n");
    for (i = 0; i < rows; i++) {
        for (j = 0; j < cols; j++) {
            printf("A[%d][%d] = ", i, j);
            scanf("%d", &A[i][j]);
        }
    }
 
    // Step 4: Input matrix B
    printf("\nEnter elements of Matrix B:\n");
    for (i = 0; i < rows; i++) {
        for (j = 0; j < cols; j++) {
            printf("B[%d][%d] = ", i, j);
            scanf("%d", &B[i][j]);
        }
    }
 
    // Step 5: Calculate Sum = A + B
    for (i = 0; i < rows; i++) {
        for (j = 0; j < cols; j++) {
            Sum[i][j] = A[i][j] + B[i][j];
        }
    }
 
    // Step 6: Display Resultant Matrix
    printf("\nResultant Matrix (A + B):\n");
    for (i = 0; i < rows; i++) {
        for (j = 0; j < cols; j++) {
            printf("%d\t", Sum[i][j]);
        }
        printf("\n");
    }
 
    // Step 7: Free allocated memory
    for (i = 0; i < rows; i++) {
        free(A[i]);
        free(B[i]);
        free(Sum[i]);
    }
    free(A);
    free(B);
    free(Sum);
 
    return 0;
}