/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		// your code goes here
	}
}

LyogcGFja2FnZSB3aGF0ZXZlcjsgLy8gZG9uJ3QgcGxhY2UgcGFja2FnZSBuYW1lISAqLwoKaW1wb3J0IGphdmEudXRpbC4qOwppbXBvcnQgamF2YS5sYW5nLio7CmltcG9ydCBqYXZhLmlvLio7CgovKiBOYW1lIG9mIHRoZSBjbGFzcyBoYXMgdG8gYmUgIk1haW4iIG9ubHkgaWYgdGhlIGNsYXNzIGlzIHB1YmxpYy4gKi8KY2xhc3MgSWRlb25lCnsKCXB1YmxpYyBzdGF0aWMgdm9pZCBtYWluIChTdHJpbmdbXSBhcmdzKSB0aHJvd3MgamF2YS5sYW5nLkV4Y2VwdGlvbgoJewoJCS8vIHlvdXIgY29kZSBnb2VzIGhlcmUKCX0KfQ==

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

#include <stdio.h>

int main() {
    // Bài 1
    int a, b;
    printf("Nhap 2 so: ");
    scanf("%d%d", &a, &b);
    printf("Tich = %d\n", a*b);
    if(b != 0){
        printf("Thuong = %d\n", a/b);
        printf("So du = %d\n", a%b);
    } else {
        printf("Khong the chia cho 0!\n");
    }

    // Bài 2
    char ten[50];
    int nam_sinh, tuoi;
    printf("Nhap ten: ");
    scanf("%s", ten);
    printf("Nhap nam sinh: ");
    scanf("%d", &nam_sinh);
    tuoi = 2025 - nam_sinh;
    printf("SV ten %s, %d tuoi\n", ten, tuoi);

    // Bài 3
    int n;
    printf("Nhap so nguyen: ");
    scanf("%d", &n);
    if(n == 0) printf("So 0\n");
    else if(n % 2 == 0) printf("So chan\n");
    else printf("So le\n");

    // Bài 4
    float diem;
    printf("Nhap diem (0-10): ");
    scanf("%f", &diem);
    if(diem >= 9) printf("Hoc luc xuat sac\n");
    else if(diem >= 8) printf("Hoc luc gioi\n");
    else if(diem >= 6.5) printf("Hoc luc kha\n");
    else if(diem >= 5) printf("Hoc luc trung binh\n");
    else if(diem >= 3.5) printf("Hoc luc yeu\n");
    else printf("Hoc luc kem\n");

    // Bài 5
    int x, y, temp;
    printf("Nhap a, b: ");
    scanf("%d%d", &x, &y);
    temp = x; x = y; y = temp;
    printf("Sau khi doi cho: a = %d, b = %d\n", x, y);

    return 0;
}