did you get any resolution / suggestions on this, i have a problem with the same two test cases, says i'm segfaulting on 16 & 17 but gcc version 6.3.1 20161221 (Red Hat 6.3.1-1) (GCC) with options -g & -Wall disagrees. my code:

include

include

include

include

include

include

include

struct node{ char *word; int count; struct node *next; };

void mainlist(char *word, struct node **list){ struct node *tmp = *list; struct node *prev = 0; if(!tmp){ (*list) = calloc(1,sizeof(*list)); (*list)->word = word; (*list)->count = 1; (*list)->next = 0; return; } while(tmp){ if(strcmp(tmp->word,word)==0){ (tmp->count)++; return; } prev = tmp; tmp = tmp->next; } prev->next = calloc(1, sizeof(prev->next)); prev->next->word = word; prev->next->count = 1; prev->next->next = 0; return; }

struct node *inlist(char *word, struct node **list){ struct node *n = *list; while(n){
if(strcmp(n->word, word)==0){ return n; } n = n->next; } return 0; }

int main(){ int m; int n; scanf("%d %d",&m,&n);

struct node *ml[256] = {0};
struct node *tmp = 0;
int c = 0;

char* *magazine = malloc(sizeof(char*) * m);
for(int magazine_i = 0; magazine_i < m; magazine_i++){
   magazine[magazine_i] = (char *)malloc(10240 * sizeof(char));
   scanf("%s",magazine[magazine_i]);
}

for(int i = 0; i < m; i++){
    c = (int)magazine[i][0];
    mainlist(magazine[i],&ml[c]);
}

char* *ransom = malloc(sizeof(char*) * n);
for(int ransom_i = 0; ransom_i < n; ransom_i++){
   ransom[ransom_i] = (char *)malloc(10240 * sizeof(char));
   scanf("%s",ransom[ransom_i]);
}

for(int j = 0; j < n; j++){
    c = (int)ransom[j][0];
    tmp = inlist(ransom[j],&ml[c]);
    if(!tmp){
        printf("No\n");
        return 0;
    }else{
        (tmp->count)--;
        if((tmp->count) < 0){
            printf("No\n");
            return 0;
        }
    }
}
printf("Yes\n");
return 0;

}