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Submission #88743

# Submission time Handle Problem Language Result Execution time Memory
88743 2018-12-08T11:38:39 Z popovicirobert Senior Postmen (BOI14_postmen) C++14
55 / 100
 500 ms 51368 KB 
#include <bits/stdc++.h>
#define lsb(x) (x & (-x))
#define ll long long
#define ull unsigned long long
// 217
// 44

using namespace std;

const int MAXN = (int) 5e5;

vector < pair <int, int> > g[MAXN + 1];
bool vis[MAXN + 1];
vector <int> ord;

void dfs(int nod) {
    while(g[nod].size()) {
        auto it = g[nod].back();
        g[nod].pop_back();
        if(vis[it.second] == 0) {
            vis[it.second] = 1;
            dfs(it.first);
        }
    }
    ord.push_back(nod);
}

int main() {
    //ifstream cin("A.in");
    //ofstream cout("A.out");
    int i, n, m;
    ios::sync_with_stdio(false);
    cin.tie(0), cout.tie(0);
    cin >> n >> m;
    for(i = 1; i <= m; i++) {
        int x, y;
        cin >> x >> y;
        g[x].push_back({y, i});
        g[y].push_back({x, i});
    }
    dfs(1);
    memset(vis, 0, sizeof(vis));
    stack <int> stk;
    for(i = 0; i < ord.size(); i++) {
        //cerr << ord[i] << "\n";
        if(vis[ord[i]] == 0) {
            vis[ord[i]] = 1;
            stk.push(ord[i]);
        }
        else {
            while(stk.top() != ord[i]) {
                cout << stk.top() << " ";
                vis[stk.top()] = 0;
                stk.pop();
            }
            cout << ord[i] << "\n";
        }
    }
    //cout << ans;
    //cin.close();
    //cout.close();
    return 0;
}

Compilation message

postmen.cpp: In function 'int main()':
postmen.cpp:44:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(i = 0; i < ord.size(); i++) {
                ~~^~~~~~~~~~~~

Subtask #1
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 12544 KB Output is correct
2 Correct 12 ms 12544 KB Output is correct
3 Correct 12 ms 12544 KB Output is correct
4 Correct 14 ms 12800 KB Output is correct
5 Correct 12 ms 12672 KB Output is correct
6 Correct 15 ms 12928 KB Output is correct
7 Correct 16 ms 13696 KB Output is correct
8 Correct 17 ms 12672 KB Output is correct
9 Correct 53 ms 18556 KB Output is correct
10 Correct 18 ms 12672 KB Output is correct
11 Correct 13 ms 12800 KB Output is correct
12 Correct 54 ms 18836 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12576 KB Output is correct
2 Correct 12 ms 12544 KB Output is correct
3 Correct 13 ms 12544 KB Output is correct
4 Correct 13 ms 12800 KB Output is correct
5 Correct 12 ms 12672 KB Output is correct
6 Correct 16 ms 12928 KB Output is correct
7 Correct 17 ms 13696 KB Output is correct
8 Correct 13 ms 12800 KB Output is correct
9 Correct 47 ms 18556 KB Output is correct
10 Correct 13 ms 12672 KB Output is correct
11 Correct 14 ms 12800 KB Output is correct
12 Correct 49 ms 18880 KB Output is correct
13 Correct 92 ms 20184 KB Output is correct
14 Correct 87 ms 18224 KB Output is correct
15 Correct 77 ms 19688 KB Output is correct
16 Correct 91 ms 20192 KB Output is correct
17 Correct 89 ms 16756 KB Output is correct
18 Correct 82 ms 18928 KB Output is correct

Subtask #3
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 12544 KB Output is correct
2 Correct 11 ms 12544 KB Output is correct
3 Correct 13 ms 12544 KB Output is correct
4 Correct 15 ms 12800 KB Output is correct
5 Correct 12 ms 12672 KB Output is correct
6 Correct 16 ms 12928 KB Output is correct
7 Correct 16 ms 13696 KB Output is correct
8 Correct 16 ms 12672 KB Output is correct
9 Correct 46 ms 18564 KB Output is correct
10 Correct 15 ms 12672 KB Output is correct
11 Correct 15 ms 12776 KB Output is correct
12 Correct 49 ms 18932 KB Output is correct
13 Correct 82 ms 20208 KB Output is correct
14 Correct 105 ms 18252 KB Output is correct
15 Correct 72 ms 19692 KB Output is correct
16 Correct 93 ms 20208 KB Output is correct
17 Correct 84 ms 16632 KB Output is correct
18 Correct 77 ms 18928 KB Output is correct
19 Correct 497 ms 51300 KB Output is correct
20 Correct 450 ms 41244 KB Output is correct
21 Correct 430 ms 47976 KB Output is correct
22 Correct 496 ms 51368 KB Output is correct
23 Correct 181 ms 40932 KB Output is correct
24 Execution timed out 525 ms 33100 KB Time limit exceeded
25 Halted 0 ms 0 KB -