#include<stdio.h>
void nhapmang(int a[100][100], int n, int m)
{
	for (int i = 0; i < n; i++)
	for (int j = 0; j < m; j++)
	{
		printf("a[%i][%i] = ", i, j); scanf("%i", &a[i][j]);
	}
}
void sapxep(int a[100][100], int m,int k)
{
	int n = m;
	for (int j = 0; j < n; j++){
		int max = 0, vitri = 0;
		for (int i = 0; i < m; i++){                           //tim max, cho no vao vitri cuoi dong va lap lai
			if (a[k][i]>max){ max = a[k][i]; vitri = i; }
			if (i == m - 1){
				a[k][vitri] = a[k][i];
				a[k][i] = max;
				m--;
			}
		}
	}
}
void main()
{
	int a[100][100],n,m;
	int k=-1;
	while (1){
		printf("Nhap so dong va so cot cua mang: "); scanf("%i %i", &n, &m);
		if (m<1 || n<1 || m>100 || n>100)continue;
		break;
	}
	nhapmang(a, n, m);
	while (k < 0 || k >= n){
		printf("Nhap vi tri dong can sap xep: "); scanf("%i", &k);
	}
	sapxep(a, m, k);
	printf("Mang sau khi sap xep: \n");
	for (int i = 0; i < n; i++)
	for (int j = 0; j < m; j++)
		printf("a[%i][%i] = %i\n", i, j, a[i][j]);
}