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Submission #165737

# Submission time Handle Problem Language Result Execution time Memory
165737 2019-11-28T12:23:44 Z Sensei Lozinke (COCI17_lozinke) C++17
70 / 100
 1000 ms 35064 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];
string 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]);
		// }
		
		cin >> st[i];
	}

	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:41:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int ss = 0; ss < st[i].size(); ss++) {
                    ~~~^~~~~~~~~~~~~~
lozinke.cpp:44:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int j = ss; j < st[i].size(); j++) {
                     ~~^~~~~~~~~~~~~~
lozinke.cpp:50:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (ss == 0 && j + 1 == st[i].size()) {
                    ~~~~~~^~~~~~~~~~~~~~~

Subtask #1
70.0 / 100.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1912 KB Output is correct
2 Correct 4 ms 1912 KB Output is correct
3 Correct 4 ms 2040 KB Output is correct
4 Correct 4 ms 2040 KB Output is correct
5 Correct 10 ms 2808 KB Output is correct
6 Correct 14 ms 3704 KB Output is correct
7 Correct 20 ms 3960 KB Output is correct
8 Correct 20 ms 4996 KB Output is correct
9 Correct 327 ms 11256 KB Output is correct
10 Correct 109 ms 17284 KB Output is correct
11 Correct 674 ms 16376 KB Output is correct
12 Incorrect 223 ms 30836 KB Output isn't correct
13 Correct 238 ms 30464 KB Output is correct
14 Incorrect 472 ms 22864 KB Output isn't correct
15 Incorrect 255 ms 33184 KB Output isn't correct
16 Correct 259 ms 35064 KB Output is correct
17 Execution timed out 1074 ms 12280 KB Time limit exceeded
18 Execution timed out 1070 ms 10488 KB Time limit exceeded
19 Correct 247 ms 26616 KB Output is correct
20 Execution timed out 1074 ms 20216 KB Time limit exceeded