oj.uz

Submission #129754

# Submission time Handle Problem Language Result Execution time Memory
129754 2019-07-13T07:22:03 Z SamAnd Senior Postmen (BOI14_postmen) C++17
55 / 100
 500 ms 94176 KB 
#include <bits/stdc++.h>
using namespace std;
#define m_p make_pair
const int N = 500005;

int n, m;
set<int> a[N];

vector<int> v;
void dfs(int x)
{
    while (1)
    {
        if (a[x].empty())
            break;
        int h = *a[x].begin();
        a[x].erase(h);
        a[h].erase(x);
        dfs(h);
    }
    v.push_back(x);
}

bool c[N];
int main()
{
    scanf("%d%d", &n, &m);
    for (int i = 0; i < m; ++i)
    {
        int x, y;
        scanf("%d%d", &x, &y);
        a[x].insert(y);
        a[y].insert(x);
    }
    dfs(1);
    stack<int> s;
    for (int i = 0; i < v.size(); ++i)
    {
        if (c[v[i]])
        {
            printf("%d ", v[i]);
            while (s.top() != v[i])
            {
                printf("%d ", s.top());
                c[s.top()] = false;
                s.pop();
            }
            printf("\n");
        }
        else
        {
            s.push(v[i]);
            c[v[i]] = true;
        }
    }
    return 0;
}

Compilation message

postmen.cpp: In function 'int main()':
postmen.cpp:37:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < v.size(); ++i)
                     ~~^~~~~~~~~~
postmen.cpp:27:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &m);
     ~~~~~^~~~~~~~~~~~~~~~
postmen.cpp:31:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d", &x, &y);
         ~~~~~^~~~~~~~~~~~~~~~

Subtask #1
38.0 / 38.0

# Verdict Execution time Memory Grader output
1 Correct 23 ms 23808 KB Output is correct
2 Correct 22 ms 23808 KB Output is correct
3 Correct 19 ms 23808 KB Output is correct
4 Correct 25 ms 24192 KB Output is correct
5 Correct 23 ms 23936 KB Output is correct
6 Correct 21 ms 24448 KB Output is correct
7 Correct 32 ms 25984 KB Output is correct
8 Correct 21 ms 24168 KB Output is correct
9 Correct 194 ms 37828 KB Output is correct
10 Correct 20 ms 24220 KB Output is correct
11 Correct 19 ms 24168 KB Output is correct
12 Correct 201 ms 37884 KB Output is correct

Subtask #2
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 23808 KB Output is correct
2 Correct 22 ms 23808 KB Output is correct
3 Correct 17 ms 23808 KB Output is correct
4 Correct 20 ms 24192 KB Output is correct
5 Correct 18 ms 23936 KB Output is correct
6 Correct 21 ms 24448 KB Output is correct
7 Correct 40 ms 25856 KB Output is correct
8 Correct 25 ms 24064 KB Output is correct
9 Correct 185 ms 37856 KB Output is correct
10 Correct 25 ms 24284 KB Output is correct
11 Correct 22 ms 24064 KB Output is correct
12 Correct 175 ms 37860 KB Output is correct
13 Correct 122 ms 37964 KB Output is correct
14 Correct 146 ms 37880 KB Output is correct
15 Correct 158 ms 37860 KB Output is correct
16 Correct 122 ms 37880 KB Output is correct
17 Correct 166 ms 37856 KB Output is correct
18 Correct 140 ms 35568 KB Output is correct

Subtask #3
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 23808 KB Output is correct
2 Correct 17 ms 23808 KB Output is correct
3 Correct 17 ms 23808 KB Output is correct
4 Correct 24 ms 24192 KB Output is correct
5 Correct 24 ms 23936 KB Output is correct
6 Correct 20 ms 24448 KB Output is correct
7 Correct 33 ms 25984 KB Output is correct
8 Correct 23 ms 24064 KB Output is correct
9 Correct 186 ms 37880 KB Output is correct
10 Correct 21 ms 24192 KB Output is correct
11 Correct 20 ms 24064 KB Output is correct
12 Correct 175 ms 37880 KB Output is correct
13 Correct 130 ms 37880 KB Output is correct
14 Correct 131 ms 37856 KB Output is correct
15 Correct 146 ms 37880 KB Output is correct
16 Correct 124 ms 37856 KB Output is correct
17 Correct 156 ms 37844 KB Output is correct
18 Correct 147 ms 35528 KB Output is correct
19 Execution timed out 653 ms 94176 KB Time limit exceeded
20 Halted 0 ms 0 KB -