oj.uz

Submission #165720

# Submission time Handle Problem Language Result Execution time Memory
165720 2019-11-28T11:41:29 Z Sensei Lozinke (COCI17_lozinke) C++17
65 / 100
 1000 ms 19128 KB 
#include <bits/stdc++.h>

using namespace std;

const long long P = 53;
const long long MOD = 1e9 + 7;

const int MAXN = 2e4;

long long add (long long x, long long y) {
	return ((x % MOD) + (y % MOD)) % MOD;
}

long long mul (long long x, long long y) {
	return ((x % MOD) * (y % MOD)) % MOD;
}

unordered_map<long long, set<int> > m;
string st[MAXN + 7];

int main () {
	int N;
	cin >> N;

	for (int i = 1; i <= N; i++) {
		cin >> st[i];
	}

	for (int i = 1; i <= N; i++) {
		long long hash = 0;

		for (int j = 0; j < st[i].size(); j++) {
			hash = mul(hash, P);
			hash = add(hash, st[i][j] - 'a' + 1);
		}

		m[hash].insert(i);
	}

	long long ans = 0;

	for (int i = 1; i <= N; i++) {
		set<int> s;

		for (int ss = 0; ss < st[i].size(); ss++) {
			long long hash = 0;

			for (int j = ss; j < st[i].size(); j++) {
				if (ss == 0 && j + 1 == st[i].size()) {
					break;
				}

				hash = mul(hash, P);
				hash = add(hash, st[i][j] - 'a' + 1);

				for (int id : m[hash]) {
					if (id != i) {
						s.insert(id);
					}
				}
			}
		}

		ans += s.size();
	}

	long long ans2 = 0;

	for (int i = 1; i <= N; i++) {
		long long hash = 0;

		for (int j = 0; j < st[i].size(); j++) {
			hash = mul(hash, P);
			hash = add(hash, st[i][j] - 'a' + 1);
		}

		ans2 += m[hash].size() - 1;
	}

	ans += ans2;

	cout << ans << "\n";

	return 0;
}

Compilation message

lozinke.cpp: In function 'int main()':
lozinke.cpp:32:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int j = 0; j < st[i].size(); j++) {
                   ~~^~~~~~~~~~~~~~
lozinke.cpp:45:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int ss = 0; ss < st[i].size(); ss++) {
                    ~~~^~~~~~~~~~~~~~
lozinke.cpp:48:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int j = ss; j < st[i].size(); j++) {
                     ~~^~~~~~~~~~~~~~
lozinke.cpp:49:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (ss == 0 && j + 1 == st[i].size()) {
                    ~~~~~~^~~~~~~~~~~~~~~
lozinke.cpp:72:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int j = 0; j < st[i].size(); j++) {
                   ~~^~~~~~~~~~~~~~

Subtask #1
65.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1016 KB Output is correct
2 Correct 3 ms 888 KB Output is correct
3 Correct 3 ms 1016 KB Output is correct
4 Correct 5 ms 1016 KB Output is correct
5 Correct 24 ms 1400 KB Output is correct
6 Correct 10 ms 1400 KB Output is correct
7 Correct 56 ms 2424 KB Output is correct
8 Correct 14 ms 3192 KB Output is correct
9 Execution timed out 1084 ms 3064 KB Time limit exceeded
10 Correct 61 ms 9096 KB Output is correct
11 Execution timed out 1075 ms 3568 KB Time limit exceeded
12 Incorrect 161 ms 19128 KB Output isn't correct
13 Correct 119 ms 3948 KB Output is correct
14 Execution timed out 1080 ms 14132 KB Time limit exceeded
15 Incorrect 177 ms 19000 KB Output isn't correct
16 Correct 111 ms 2104 KB Output is correct
17 Correct 59 ms 1916 KB Output is correct
18 Execution timed out 1084 ms 2680 KB Time limit exceeded
19 Correct 132 ms 10372 KB Output is correct
20 Execution timed out 1079 ms 2296 KB Time limit exceeded