oj.uz

Submission #832125

# Submission time Handle Problem Language Result Execution time Memory
832125 2023-08-21T02:05:05 Z vjudge1 Lozinke (COCI17_lozinke) C++14
100 / 100
 74 ms 12268 KB 
#include <bits/stdc++.h>

using namespace std;

typedef unsigned long long ull;

const int P = 1e9 + 7;

const int N = 2e4 + 10;
const int M = 11;

int read()
{
    int num = 0, flag = 1;
    char ch = getchar();
    for (; !isdigit(ch); ch = getchar())
        if (ch == '-')
            flag = -1;
    for (; isdigit(ch); ch = getchar())
        num = (num << 3) + (num << 1) + ch - '0';
    return num * flag;
}

string readline()
{
    string s;
    char ch = getchar();
    while (!isalpha(ch))
        ch = getchar();
    for (; ch > 13; ch = getchar())
        s.push_back(ch);
    return s;
}

string pwd[N];

ull pw[N];
ull h[N][M];

unordered_set<ull> sub;
unordered_map<ull, int> res;

int main()
{
    pw[0] = 1;
    for (int i = 1; i < N; ++i)
        pw[i] = pw[i - 1] * P;

    int n = read();

    for (int i = 0; i < n; ++i)
    {
        pwd[i] = readline();

        sub.clear();

        h[i][0] = pwd[i][0];
        for (int k = 1; k < pwd[i].size(); ++k)
            h[i][k] = h[i][k - 1] * P + pwd[i][k];

        for (int r = 0; r < pwd[i].size(); ++r)
            sub.insert(h[i][r]);
        for (int l = 1; l < pwd[i].size(); ++l)
            for (int r = l; r < pwd[i].size(); ++r)
                sub.insert(h[i][r] - h[i][l - 1] * pw[r - l + 1]);

        for (ull k : sub)
            ++res[k];
    }

    int ans = 0;
    for (int i = 0; i < n; ++i)
        ans += res[h[i][pwd[i].size() - 1]];

    printf("%d\n", ans - n);
    return 0;
}

Compilation message

lozinke.cpp: In function 'int main()':
lozinke.cpp:58:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   58 |         for (int k = 1; k < pwd[i].size(); ++k)
      |                         ~~^~~~~~~~~~~~~~~
lozinke.cpp:61:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   61 |         for (int r = 0; r < pwd[i].size(); ++r)
      |                         ~~^~~~~~~~~~~~~~~
lozinke.cpp:63:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |         for (int l = 1; l < pwd[i].size(); ++l)
      |                         ~~^~~~~~~~~~~~~~~
lozinke.cpp:64:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |             for (int r = l; r < pwd[i].size(); ++r)
      |                             ~~^~~~~~~~~~~~~~~

Subtask #1
100.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1108 KB Output is correct
2 Correct 1 ms 1100 KB Output is correct
3 Correct 1 ms 1108 KB Output is correct
4 Correct 1 ms 1108 KB Output is correct
5 Correct 3 ms 1364 KB Output is correct
6 Correct 4 ms 1364 KB Output is correct
7 Correct 5 ms 1876 KB Output is correct
8 Correct 7 ms 2388 KB Output is correct
9 Correct 21 ms 3016 KB Output is correct
10 Correct 33 ms 6660 KB Output is correct
11 Correct 27 ms 4648 KB Output is correct
12 Correct 72 ms 11720 KB Output is correct
13 Correct 45 ms 3956 KB Output is correct
14 Correct 62 ms 12268 KB Output is correct
15 Correct 74 ms 12108 KB Output is correct
16 Correct 52 ms 3004 KB Output is correct
17 Correct 23 ms 2888 KB Output is correct
18 Correct 17 ms 2872 KB Output is correct
19 Correct 46 ms 7288 KB Output is correct
20 Correct 27 ms 2948 KB Output is correct