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Submission #165736

# Submission time Handle Problem Language Result Execution time Memory
165736 2019-11-28T12:22:15 Z Sensei Lozinke (COCI17_lozinke) C++17
70 / 100
 1000 ms 35452 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;
}

vector<char> st[MAXN + 7];
long long fullhash[MAXN + 7];
// vector<long long> subhashes[MAXN + 7];
set<long long> subhashes[MAXN + 7];
char buff[12];
multiset<long long> fullhashes;

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

	for (int i = 1; i <= N; i++) {
		scanf("%s", buff);

		for (int j = 0; buff[j] != 0; j++) {
			st[i].push_back(buff[j]);
		}
	}

	for (int i = 1; i <= N; i++) {
		for (int ss = 0; ss < st[i].size(); ss++) {
			long long hash = 0;

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

				// subhashes[i].push_back(hash);
				subhashes[i].insert(hash);
				if (ss == 0 && j + 1 == st[i].size()) {
					fullhash[i] = hash;
					fullhashes.insert(hash);
				}
			}
		}

		// sort(subhashes[i].begin(), subhashes[i].end());
	}

	long long ans = 0;

	for (int i = 1; i <= N; i++) {
		for (long long hash : subhashes[i]) {
			ans += fullhashes.count(hash);
		}

		ans--;
	}

	cout << ans << "\n";

	return 0;
}

Compilation message

lozinke.cpp: In function 'int main()':
lozinke.cpp:38:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int ss = 0; ss < st[i].size(); ss++) {
                    ~~~^~~~~~~~~~~~~~
lozinke.cpp:41:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int j = ss; j < st[i].size(); j++) {
                     ~~^~~~~~~~~~~~~~
lozinke.cpp:47:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (ss == 0 && j + 1 == st[i].size()) {
                    ~~~~~~^~~~~~~~~~~~~~~
lozinke.cpp:30:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s", buff);
   ~~~~~^~~~~~~~~~~~

Subtask #1
70.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1784 KB Output is correct
2 Correct 3 ms 1784 KB Output is correct
3 Correct 4 ms 1784 KB Output is correct
4 Correct 5 ms 1916 KB Output is correct
5 Correct 10 ms 2808 KB Output is correct
6 Correct 14 ms 3448 KB Output is correct
7 Correct 21 ms 3832 KB Output is correct
8 Correct 20 ms 4856 KB Output is correct
9 Correct 317 ms 11512 KB Output is correct
10 Correct 115 ms 17400 KB Output is correct
11 Correct 662 ms 16632 KB Output is correct
12 Incorrect 233 ms 31096 KB Output isn't correct
13 Correct 245 ms 30968 KB Output is correct
14 Incorrect 476 ms 23376 KB Output isn't correct
15 Incorrect 260 ms 33784 KB Output isn't correct
16 Correct 261 ms 35452 KB Output is correct
17 Execution timed out 1069 ms 12796 KB Time limit exceeded
18 Execution timed out 1077 ms 11000 KB Time limit exceeded
19 Correct 238 ms 26872 KB Output is correct
20 Execution timed out 1077 ms 20728 KB Time limit exceeded