#include <stdio.h>
#include <stdlib.h>
int main(){
char s[] = "CAO DaNG thai nguyen";
//Chuyen ky tu thanh chu in Hoa
for (int i = 0; s[i] != '\0'; i++)
{
if (s[i] != ' ' && (s[i] >= 97 && s[i] <= 122))
s[i] = s[i] - 32;
}
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CiNpbmNsdWRlIDxzdGRsaWIuaD4KCmludCBtYWluKCl7CiAgICBzeXN0ZW0oImNscyIpOwoKICAgIGNoYXIgc1tdID0gIkNBTyBEYU5HIHRoYWkgbmd1eWVuIjsKICAgIAogICAgCiAgICAvL0NodXllbiBreSB0dSB0aGFuaCBjaHUgaW4gSG9hCiAgICBmb3IgKGludCBpID0gMDsgc1tpXSAhPSAnXDAnOyBpKyspCiAgICB7CiAgICAgICAgaWYgKHNbaV0gIT0gJyAnICYmIChzW2ldID49IDk3ICYmIHNbaV0gPD0gMTIyKSkKICAgICAgICAgICAgc1tpXSA9IHNbaV0gLSAzMjsKICAgIH0KICAgICAgICBwcmludGYoIiVzIiwgcyk7CiAgICAgICAgcmV0dXJuIDA7CiAgICAKfQ==