제출 #1012432

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1012432		vjudge1	Type Printer (IOI08_printer)	C++17	100 / 100	81 ms	57304 KiB

printer

#include <bits/stdc++.h>
#define ll long long
#define pii pair <int, int>
using namespace std;
const int N = 1e6 + 10;
const int siz = 28;
struct node {
    int ch[siz];
    int vis;
    int biggest;
} trie[N];
int ncnt, rt;
char s[N][22];
vector <char> ans;
inline void insert(char *s, int ok) {
    int p = rt;
    for (int i = 0; s[i]; ++i) {
        int j = s[i] - 'a';
        if (!trie[p].ch[j])
            trie[p].ch[j] = ++ncnt;
        trie[p].biggest |= ok;
        p = trie[p].ch[j];
    }
    trie[p].biggest |= ok;
    trie[p].vis ++;
}
inline int find(char *s) {
    int p = rt;
    for (int i = 0; s[i]; ++i) {
        int j = s[i] - 'a';
        if (!trie[p].vis)
            return 0;
        p = trie[p].ch[j];
    }
    return trie[p].vis;
}
inline void dfs(int x) {
    if (trie[x].vis) {
        ans.push_back('P');
    }
    for (int i = 0; i < siz; ++i) {
        if (trie[x].ch[i] && !trie[trie[x].ch[i]].biggest) {
            ans.push_back(i + 'a');
            dfs(trie[x].ch[i]);
        }
    }
    for (int i = 0; i < siz; ++i) {
        if (trie[x].ch[i] && trie[trie[x].ch[i]].biggest) {
            ans.push_back(i + 'a');
            dfs(trie[x].ch[i]);
        }
    }
    if (x) ans.push_back('-');
}
int main() {
    int n; scanf("%d", &n);
    int maxn = 0, id = 0;
    for (int i = 1; i <= n; ++i) {
        scanf("%s", s[i]);
        if(strlen(s[i]) > maxn) {
            maxn = strlen(s[i]);
            id = i;
        }
    }
    for (int i = 1; i <= n; ++i) {
        if (i == id) insert(s[i], 1);
        else insert(s[i], 0);
    }
    dfs(0);
    int k = ans.size() - 1;
    while (ans[k] == '-' && k > 0) k --;
    k += 1;
    printf("%d\n", k);
    for (int i = 0; i < k; ++i)
        printf("%c\n", ans[i]);
    return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

printer.cpp: In function 'int main()':
printer.cpp:60:25: warning: comparison of integer expressions of different signedness: 'size_t' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   60 |         if(strlen(s[i]) > maxn) {
      |            ~~~~~~~~~~~~~^~~~~~
printer.cpp:56:17: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   56 |     int n; scanf("%d", &n);
      |            ~~~~~^~~~~~~~~~
printer.cpp:59:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 |         scanf("%s", s[i]);
      |         ~~~~~^~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10