Submission

Score: 80

User: I_am_me

Problemset: ตัวอักษรตัวแรกในคำ

Language: c

Time: 0.003 second

Submitted On: 2025-09-24 22:41:39

#include <stdio.h>
#include <stdio.h>
#include <string.h>
int main()
{
    char word[20] ;
    scanf("%s",&word) ;
    int size = strlen(word) ;
    for(int i = 0;i<size;i++) {
        int j = i;
        while(j-1>=0 && word[j]<word[j-1]) {
            char swp = word[j] ;
            word[j] = word[j-1] ;
            word[j-1] = swp;
            j--;
        }
    }
    
    int m =999;
    for(int k = 0;k<size-2;k++) {
        if(word[k]!=word[k+1] && word[k+1]!=word[k+2]) {
            m = k;
            break;
        }
    }
    if(m == 999) printf("");
    else if(m==0) printf("%c",word[m]) ;
    else if (m>0 && m !=999) printf("%c",word[m+1]) ;
    else if(size == 2 && word[0] != word[1]) printf("%c",word[0]) ;
    else if(size == 1) printf("%c",word[0]) ;
}