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- #include <stdio.h>
- #include <stdlib.h>
- char buffer[1020][1020] = {0};
- int distance(char *a,char *b,int n){
- int i,s=0;
- for(i = 0;i < n;i++){
- s += abs(a[i]-b[i]);
- }
- return s;
- }
- int main(int argc,char **argv){
- int n,m,i,j,dm = 1000;
- scanf("%d%d",&n,&m);
- for(i = 0;i < m;i++){
- scanf("%s",buffer[i]);
- }
- for(i = 0;i < m;i++){
- for(j = i + 1;j < m;j++){
- int cur = distance(buffer[i],buffer[j],n);
- if(cur < dm){
- dm = cur;
- }
- }
- }
- printf("%d\n",dm);
- return 0;
- }
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