Submission #3924310

---

Source Code Expand

#include <cstdio>
#include <iostream>
#include <algorithm>
#include <cstring>
using namespace std;
char s[5005], Str[15];
int arr[5005], chk[10005];
int K;

int Hash(char *str)
{
    int hap = 37, length;
    length = strlen(str);
    for(int i = 0; i < length; i++)
    {
        hap = (hap * 1234731 + str[i] - 'a') % 10001;
    }
    return hap;
}

bool comp(int t, int u)
{
    if(s[t] == s[u])
    {
        for(int i = 1; i < 5; i++)
        {
            if(s[t + i] == s[u + i])
            {
                continue;
            }
            return s[t + i] < s[u + i];
        }
    }
    return s[t] < s[u];
}

int main()
{
    int length;
    scanf("%s %d", s, &K);
    length = strlen(s);
    s[length] = 100;
    for(int i = 0; i < length; i++)
    {
        arr[i] = i;
    }
    sort(arr, arr + length, comp);
    int count = 0, sidx = 0;
    for(int i = 0; i < length; i++)
    {
        if(count == K)
        {
            printf("%s", Str);
            break;
        }
        if(arr[i] + count < length)
        {
            Str[sidx++] = s[arr[i] + count];
            Str[sidx] = 0;
            if(chk[Hash(Str)] == 1)
            {
                K++;
            }
            chk[Hash(Str)] = 1;
            count++;
            i--;
        }
        else
        {
            K -= count;
            count = 0;
            sidx = 0;
        }
    }
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:40:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s %d", s, &K);
                          ^

Judge Result