#include <stdio.h>
#include <string.h>
#pragma warning(disable: 4996)

char* tachTuDau(char* st)
{
	int start = 0;
	char Tach[32];
	int  m = 0;
	int n = strlen(st);
	for (int i = 0; i < n; i++)
	{
		if (st[i] != ' ')
		{
			start = i;
			break;
		}
	}

	int end = 0;
	for (int i = start; i < n; i++)
	{
		if (st[i] == ' ')
		{
			end = i;
			break;
		}
	}


	for (int j= start; j < end; j++)
	{
		Tach[m] = st[j];
		m++;
		
	}

	Tach[m] = '\0';
	char* s = strdup(Tach);

	return s;
}

void InHocSinhCoHoNguyen(char st[50][30], int n)
{
	printf("\n\t====NHUNG HOC SINH CO HO NGUYEN===\n");
	int dem = 1;

	for (int i = 0; i < n; i++)
	{
		if (strcmp(tachTuDau(st[i]), "Nguyen") == 0)
		{
			
			printf("\nHoc sinh thu %d = %s", dem++, st[i]);
		}
	}
}

int main()
{
	char st[50][30];
	int n;
	printf("\nNhap so luong hoc sinh: ");
	scanf("%d", &n);
	for (int i = 0; i < n; i++)
	{
		fflush(stdin);
		printf("\nNhap hoc sinh thu %d = ", i + 1);
		gets(st[i]);
	}

	InHocSinhCoHoNguyen(st, n);


	return 0;
}