oj.uz

Submission #162670

# Submission time Handle Problem Language Result Execution time Memory
162670 2019-11-09T07:58:32 Z _qVp_ Cezar (COCI16_cezar) C++14
10 / 100
 3 ms 380 KB 
#include <bits/stdc++.h>

using namespace std;

const int md = 105;
const int oo = 1e9;

int low[md], num[md], a[md], ans[md];
stack < int > st, topo;
vector < int > adj[md];
int cnt, n;
string s1[md], s[md];

void tarjan(int u) {
    st.push(u);
    low[u] = num[u] = ++cnt;
    for(int i = 0; i < adj[u].size(); i++) {
        int v = adj[u][i];
        if (num[v]) 
            low[u] = min(low[u], num[v]);
        else {
            tarjan(v);
            low[u] = min(low[u], low[v]);
        }
    }
    if (low[u] == num[u]) {
        int v = 0, c = 0;
        do {
            v = st.top(); st.pop();
            c++;
            low[u] = num[u] = oo;
        } while (v != u);
        if (c >= 2) {
            cout << "NE";
            exit(0);
        }
    }
    topo.push(u);
}

int main() {
    //freopen("test.in", "r", stdin);
    ios_base::sync_with_stdio(0);
    cin >> n;
    for(int i = 1; i <= n; i++)
        cin >> s1[i];
    for(int i = 1; i <= n; i++) {
        int x;
        cin >> x;
        s[i] = s1[x];
    }
    for(int u = 1; u <= n; u++) {
        //int u = a[i];
        //cerr << s[u] << endl;
        for(int v = u + 1; v <= n; v++) {
            int len = min(s[u].size(), s[v].size());
            //cerr << s[v] << " ";
            bool ok = false;
            for(int k = 0; k < len; k++) 
                if (s[u][k] != s[v][k]) {
                    ok = true;
                    //cout << s[u][k] - 'a' << " " << s[v][k] - 'a' << endl;
                    adj[s[u][k] - 'a'].push_back(s[v][k] - 'a');
                    break;
                }
            if (ok == false && s[u].size() > s[v].size())  {
                cout << "NE";
                return 0;
            }
        }
        //cerr << endl;
    }
    //cerr  << "checking";
    for(int i = 0; i < 26; i++)
        if (!num[i])
            tarjan(i);
    int cnt = 0;
    while (topo.size()) {
        int u = topo.top(); topo.pop();
        //cout << char(u + 'a') << " ";
        ans[u] = cnt++;
    }
    cout << "DA\n";
    for(int i = 0; i < 26; i++)
        cout << char(ans[i] + 'a');
    return 0;
}

Compilation message

cezar.cpp: In function 'void tarjan(int)':
cezar.cpp:17:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < adj[u].size(); i++) {
                    ~~^~~~~~~~~~~~~~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 380 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 3 ms 376 KB Output is correct

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -