考场代码：

（写得彳艮氵……，O2 差不多能 AC，许多地方可以优化。。）

#include<bits/stdc++.h>
using namespace std;

//WRITTEN by S.H.Z. at 2023 NOIP exam
int n_shz=0;  //to save the number of words 
int l_shz=0;  //to save the length of words 
char dic_shz[3010][3010]={};  //define a dictionary typed char to save words

//define a compare fuction, to sort the words from big to small
bool cmp1_shz(char a, char b){
	return a>b;
}

//define a compare fuction, to sort the words from small to big
bool cmp2_shz(char a, char b){
	return a<b;
}

//define a compare fuction, to compare two words
bool cmp3_shz(char a[], char b[]){
	for(int i=0; i<l_shz; i++){ //comparing the words' letters one by one
		if(a[i] > b[i]) return 1;  //if the letter of A is bigger, then word A must bigger than word B
		else if(a[i] < b[i]) return 0;  //if the letter of A is smaller, then word A must smaller than word B
		else ;  //if the letter of A is the same as B, then continue to compare until find a letter that is different
	}
	
	return 0;
}

int main(){
	freopen("dict.in", "r", stdin);
	freopen("dict.out", "w", stdout);
	
	//STEP 1: INPUT
	scanf("%d%d", &n_shz, &l_shz); 
	
	//inputting each word in range
	for(int i=0; i<n_shz; i++){
		scanf("%s", dic_shz[i]); 

		//sort the word's letters from big to small to deal with the next step of comparing
		sort(dic_shz[i], dic_shz[i]+l_shz, cmp1_shz);
	}
	
	//STEP 2: COMPARE
	for(int i=0; i<n_shz; i++){
		char tent_shz[3010]={};  //to save the word in tent
		for(int j=0; j<l_shz; j++) tent_shz[j] = dic_shz[i][j];
		
		//this time, sort the word's letters from small to big
		sort(tent_shz, tent_shz+l_shz, cmp2_shz);
		
		int flag_shz=1;  //a flag to record if this word is smaller than the others, also the output result
		for(int j=0; j<n_shz; j++){
			if(i == j) continue;  //a word can not compare with itself
			
			//if there is a word bigger than this, then print zero
			if(cmp3_shz(tent_shz, dic_shz[j])){
				flag_shz = 0;
				break;
			}
		}
		
		//STEP 3: OUTPUT
		//if there isn't, then print one
		printf("%d", flag_shz);
	}
	
	
	fclose(stdin);
	fclose(stdout);
	
	return 0;
}