Submission #197460

#	Time	Username	Problem	Language	Result	Execution time	Memory
197460		SamAnd	Type Printer (IOI08_printer)	C++17	100 / 100	166 ms	50028 KiB

printer

#include <bits/stdc++.h>
using namespace std;
const int N = 25003, M = 22;

int n;
int maxu;
char u[M];

int z;
int t[N * M][26];
int q[N * M];
bool c[N * M];

vector<char> ans;
void dfs(int x)
{
    for (int i = 0; i < q[x]; ++i)
        ans.push_back('P');
    for (int i = 0; i < 26; ++i)
    {
        if (t[x][i])
        {
            if (!c[t[x][i]])
            {
                ans.push_back(i + 'a');
                dfs(t[x][i]);
            }
        }
    }
    for (int i = 0; i < 26; ++i)
    {
        if (t[x][i])
        {
            if (c[t[x][i]])
            {
                ans.push_back(i + 'a');
                dfs(t[x][i]);
            }
        }
    }
    if (!c[x])
        ans.push_back('-');
}

int main()
{
    scanf("%d", &n);
    while (n--)
    {
        char a[M];
        scanf(" %s", a);
        int m = strlen(a);
        int pos = 0;
        for (int i = 0; i < m; ++i)
        {
            if (!t[pos][a[i] - 'a'])
                t[pos][a[i] - 'a'] = ++z;
            pos = t[pos][a[i] - 'a'];
        }
        ++q[pos];
        if (m > maxu)
        {
            maxu = m;
            for (int i = 0; i < m; ++i)
                u[i] = a[i];
        }
    }
    int pos = 0;
    c[pos] = true;
    for (int i = 0; i < maxu; ++i)
    {
        if (!t[pos][u[i] - 'a'])
            t[pos][u[i] - 'a'] = ++z;
        pos = t[pos][u[i] - 'a'];
        c[pos] = true;
    }
    dfs(0);
    printf("%d\n", ans.size());
    for (int i = 0; i < ans.size(); ++i)
        printf("%c\n", ans[i]);
    return 0;
}

Compilation message (stderr)

printer.cpp: In function 'int main()':
printer.cpp:78:30: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<char>::size_type {aka long unsigned int}' [-Wformat=]
     printf("%d\n", ans.size());
                    ~~~~~~~~~~^
printer.cpp:79:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < ans.size(); ++i)
                     ~~^~~~~~~~~~~~
printer.cpp:47:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
printer.cpp:51:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf(" %s", a);
         ~~~~~^~~~~~~~~~

• 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