oj.uz

Submission #338719

# Submission time Handle Problem Language Result Execution time Memory
338719 2020-12-23T18:45:16 Z FlashGamezzz Savez (COCI15_savez) C++11
48 / 120
 60 ms 20332 KB 
#include <iostream>
#include <cstdlib>
#include <cstdio>
#include <fstream>
#include <algorithm>
#include <utility>
#include <vector>
#include <iostream>
#include <string>
#include <unordered_map>

using namespace std;

int n, p = 31, m = 1000000009;
vector<long long> ph[2000], sh[2000];

int main() {
	ios_base::sync_with_stdio(false); cin.tie(NULL); cin >> n;
	for (int i = 0; i < n; i++){
		string a; cin >> a;
		long long pow = 1, h = 0;
		for (int j = 0; j < a.length(); j++) {
			h += (a[j]-'A'+1)*pow; h %= m;
			ph[i].push_back(h); pow *= p; pow %= m;
		}
		h = 0;
		for (int j = a.length()-1; j >= 0; j--) {
			h *= p; h %= m; h += (a[j]-'A'+1); h %= m;
			sh[i].push_back(h);
		}
	}
	unordered_map<long long, int> subsq;
	int ans = 0;
	for (int i = 0; i < n; i++){
		int mv = 0;
		for (int j = 0; j < ph[i].size(); j++){
			if (ph[i][j] == sh[i][j]){
				unordered_map<long long, int>::iterator it = subsq.find(ph[i][j]);
				if (it != subsq.end()){
					mv = max(mv, it->second);
				}
			}
		}
		subsq[ph[i][ph[i].size()-1]] = mv+1; ans = max(ans, mv+1);
	}
	cout << ans << endl;
}

Compilation message

savez.cpp: In function 'int main()':
savez.cpp:22:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |   for (int j = 0; j < a.length(); j++) {
      |                   ~~^~~~~~~~~~~~
savez.cpp:36:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |   for (int j = 0; j < ph[i].size(); j++){
      |                   ~~^~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 492 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 4 ms 1772 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 17388 KB Output is correct
2 Correct 55 ms 17536 KB Output is correct
3 Correct 60 ms 19948 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2028 KB Output is correct
2 Correct 44 ms 19564 KB Output is correct
3 Correct 49 ms 20332 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 22 ms 12780 KB Execution killed with signal 6 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #6
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 11 ms 5612 KB Execution killed with signal 6 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #7
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 8 ms 3436 KB Execution killed with signal 6 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #8
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 6 ms 2412 KB Execution killed with signal 6 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #9
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 5 ms 1516 KB Execution killed with signal 6 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #10
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 4 ms 1132 KB Execution killed with signal 6 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -