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Submission #1102245

# Submission time Handle Problem Language Result Execution time Memory
1102245 2024-10-17T19:48:52 Z alexdd Graph (BOI20_graph) C++17
34 / 100
 700 ms 10312 KB 
#include <bits/stdc++.h>
using namespace std;
const int INF = 1e9;
int n,m;
double val[100005];
int u[200005],v[200005],s[200005];
vector<pair<int,int>> con[100005];
bool visited[100005];
bool bun;
double cur;
vector<int> aux;
void dfs(int nod)
{
    cur += abs(val[nod]);
    aux.push_back(nod);
    visited[nod]=1;
    for(auto [adj,sum]:con[nod])
    {
        if(!visited[adj])
        {
            val[adj] = sum - val[nod];
            dfs(adj);
        }
        else if(val[adj] != sum - val[nod])
            bun = 0;
    }
}
vector<double> possible;
int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);
    for(double i = -50;i<=50;i+=0.5)
        possible.push_back(i);
    cin>>n>>m;
    for(int i=1;i<=m;i++)
    {
        cin>>u[i]>>v[i]>>s[i];
        con[u[i]].push_back({v[i],s[i]});
        con[v[i]].push_back({u[i],s[i]});
    }
    for(int i=1;i<=n;i++)
    {
        visited[i]=0;
    }
    double sum=0;
    for(int i=1;i<=n;i++)
    {
        if(!visited[i])
        {
            double mnm=INF,unde;
            for(double x:possible)
            {
                val[i] = x;
                bun=1;
                aux.clear();
                cur=0;
                dfs(i);
                if(bun && cur<mnm)
                {
                    mnm = cur;
                    unde = x;
                }
                for(int y:aux)
                    visited[y]=0;
            }
            if(mnm==INF)
            {
                cout<<"NO";
                return 0;
            }

            val[i] = unde;
            dfs(i);

            sum += mnm;
        }
    }
    cout<<"YES\n";
    for(int i=1;i<=n;i++)
        cout<<val[i]<<" ";
    return 0;
}

Compilation message

Graph.cpp: In function 'int main()':
Graph.cpp:72:20: warning: 'unde' may be used uninitialized in this function [-Wmaybe-uninitialized]
   72 |             val[i] = unde;
      |             ~~~~~~~^~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4432 KB answer = YES
2 Correct 1 ms 4432 KB answer = YES
3 Correct 1 ms 4432 KB answer = YES
4 Correct 1 ms 4432 KB answer = NO
5 Correct 1 ms 4432 KB answer = YES
6 Correct 1 ms 4432 KB answer = YES
7 Correct 1 ms 4432 KB answer = YES
8 Correct 1 ms 4432 KB answer = YES
9 Correct 2 ms 4432 KB answer = NO
10 Correct 1 ms 4432 KB answer = YES
11 Correct 1 ms 4432 KB answer = YES
12 Correct 2 ms 4488 KB answer = NO
13 Correct 1 ms 4432 KB answer = YES
14 Correct 1 ms 4432 KB answer = YES
15 Correct 1 ms 4432 KB answer = YES
16 Correct 1 ms 4432 KB answer = YES
17 Correct 1 ms 4432 KB answer = YES
18 Correct 1 ms 4432 KB answer = YES
19 Correct 1 ms 4432 KB answer = YES
20 Correct 1 ms 4432 KB answer = YES
21 Correct 1 ms 4600 KB answer = YES
22 Correct 1 ms 4432 KB answer = NO
23 Correct 1 ms 4432 KB answer = NO

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4432 KB answer = YES
2 Correct 1 ms 4432 KB answer = YES
3 Correct 1 ms 4432 KB answer = YES
4 Correct 1 ms 4432 KB answer = NO
5 Correct 1 ms 4432 KB answer = YES
6 Correct 1 ms 4432 KB answer = YES
7 Correct 1 ms 4432 KB answer = YES
8 Correct 1 ms 4432 KB answer = YES
9 Correct 2 ms 4432 KB answer = NO
10 Correct 1 ms 4432 KB answer = YES
11 Correct 1 ms 4432 KB answer = YES
12 Correct 2 ms 4488 KB answer = NO
13 Correct 1 ms 4432 KB answer = YES
14 Correct 1 ms 4432 KB answer = YES
15 Correct 1 ms 4432 KB answer = YES
16 Correct 1 ms 4432 KB answer = YES
17 Correct 1 ms 4432 KB answer = YES
18 Correct 1 ms 4432 KB answer = YES
19 Correct 1 ms 4432 KB answer = YES
20 Correct 1 ms 4432 KB answer = YES
21 Correct 1 ms 4600 KB answer = YES
22 Correct 1 ms 4432 KB answer = NO
23 Correct 1 ms 4432 KB answer = NO
24 Correct 2 ms 4432 KB answer = YES
25 Correct 1 ms 4432 KB answer = YES
26 Correct 1 ms 4432 KB answer = YES
27 Correct 2 ms 4432 KB answer = YES
28 Correct 2 ms 4432 KB answer = YES
29 Correct 1 ms 4432 KB answer = YES
30 Correct 2 ms 4432 KB answer = NO
31 Correct 2 ms 4432 KB answer = YES
32 Correct 1 ms 4432 KB answer = YES
33 Correct 1 ms 4432 KB answer = YES
34 Correct 2 ms 4432 KB answer = YES
35 Correct 2 ms 4432 KB answer = YES
36 Correct 1 ms 4432 KB answer = YES

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4432 KB answer = YES
2 Correct 1 ms 4432 KB answer = YES
3 Correct 1 ms 4432 KB answer = YES
4 Correct 1 ms 4432 KB answer = NO
5 Correct 1 ms 4432 KB answer = YES
6 Correct 1 ms 4432 KB answer = YES
7 Correct 1 ms 4432 KB answer = YES
8 Correct 1 ms 4432 KB answer = YES
9 Correct 2 ms 4432 KB answer = NO
10 Correct 1 ms 4432 KB answer = YES
11 Correct 1 ms 4432 KB answer = YES
12 Correct 2 ms 4488 KB answer = NO
13 Correct 1 ms 4432 KB answer = YES
14 Correct 1 ms 4432 KB answer = YES
15 Correct 1 ms 4432 KB answer = YES
16 Correct 1 ms 4432 KB answer = YES
17 Correct 1 ms 4432 KB answer = YES
18 Correct 1 ms 4432 KB answer = YES
19 Correct 1 ms 4432 KB answer = YES
20 Correct 1 ms 4432 KB answer = YES
21 Correct 1 ms 4600 KB answer = YES
22 Correct 1 ms 4432 KB answer = NO
23 Correct 1 ms 4432 KB answer = NO
24 Correct 2 ms 4432 KB answer = YES
25 Correct 1 ms 4432 KB answer = YES
26 Correct 1 ms 4432 KB answer = YES
27 Correct 2 ms 4432 KB answer = YES
28 Correct 2 ms 4432 KB answer = YES
29 Correct 1 ms 4432 KB answer = YES
30 Correct 2 ms 4432 KB answer = NO
31 Correct 2 ms 4432 KB answer = YES
32 Correct 1 ms 4432 KB answer = YES
33 Correct 1 ms 4432 KB answer = YES
34 Correct 2 ms 4432 KB answer = YES
35 Correct 2 ms 4432 KB answer = YES
36 Correct 1 ms 4432 KB answer = YES
37 Correct 2 ms 4432 KB answer = YES
38 Correct 2 ms 4432 KB answer = YES
39 Correct 2 ms 4688 KB answer = YES
40 Correct 4 ms 4856 KB answer = YES
41 Correct 3 ms 4688 KB answer = NO
42 Correct 4 ms 4688 KB answer = YES
43 Correct 4 ms 4860 KB answer = YES
44 Correct 4 ms 4688 KB answer = YES
45 Correct 4 ms 4688 KB answer = YES
46 Correct 2 ms 4688 KB answer = YES
47 Correct 4 ms 4688 KB answer = YES
48 Correct 5 ms 4688 KB answer = YES

Subtask #4
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4432 KB answer = YES
2 Correct 1 ms 4432 KB answer = YES
3 Correct 1 ms 4432 KB answer = YES
4 Correct 1 ms 4432 KB answer = NO
5 Correct 1 ms 4432 KB answer = YES
6 Correct 1 ms 4432 KB answer = YES
7 Correct 1 ms 4432 KB answer = YES
8 Correct 1 ms 4432 KB answer = YES
9 Correct 2 ms 4432 KB answer = NO
10 Correct 1 ms 4432 KB answer = YES
11 Correct 1 ms 4432 KB answer = YES
12 Correct 2 ms 4488 KB answer = NO
13 Correct 1 ms 4432 KB answer = YES
14 Correct 1 ms 4432 KB answer = YES
15 Correct 1 ms 4432 KB answer = YES
16 Correct 1 ms 4432 KB answer = YES
17 Correct 1 ms 4432 KB answer = YES
18 Correct 1 ms 4432 KB answer = YES
19 Correct 1 ms 4432 KB answer = YES
20 Correct 1 ms 4432 KB answer = YES
21 Correct 1 ms 4600 KB answer = YES
22 Correct 1 ms 4432 KB answer = NO
23 Correct 1 ms 4432 KB answer = NO
24 Correct 2 ms 4432 KB answer = YES
25 Correct 1 ms 4432 KB answer = YES
26 Correct 1 ms 4432 KB answer = YES
27 Correct 2 ms 4432 KB answer = YES
28 Correct 2 ms 4432 KB answer = YES
29 Correct 1 ms 4432 KB answer = YES
30 Correct 2 ms 4432 KB answer = NO
31 Correct 2 ms 4432 KB answer = YES
32 Correct 1 ms 4432 KB answer = YES
33 Correct 1 ms 4432 KB answer = YES
34 Correct 2 ms 4432 KB answer = YES
35 Correct 2 ms 4432 KB answer = YES
36 Correct 1 ms 4432 KB answer = YES
37 Correct 2 ms 4432 KB answer = YES
38 Correct 2 ms 4432 KB answer = YES
39 Correct 2 ms 4688 KB answer = YES
40 Correct 4 ms 4856 KB answer = YES
41 Correct 3 ms 4688 KB answer = NO
42 Correct 4 ms 4688 KB answer = YES
43 Correct 4 ms 4860 KB answer = YES
44 Correct 4 ms 4688 KB answer = YES
45 Correct 4 ms 4688 KB answer = YES
46 Correct 2 ms 4688 KB answer = YES
47 Correct 4 ms 4688 KB answer = YES
48 Correct 5 ms 4688 KB answer = YES
49 Correct 52 ms 5200 KB answer = YES
50 Correct 39 ms 5468 KB answer = YES
51 Correct 39 ms 5456 KB answer = YES
52 Correct 37 ms 5456 KB answer = NO
53 Correct 4 ms 4688 KB answer = YES
54 Correct 7 ms 4800 KB answer = YES
55 Correct 15 ms 4944 KB answer = YES
56 Correct 44 ms 5200 KB answer = YES
57 Correct 28 ms 4944 KB answer = YES
58 Correct 23 ms 4944 KB answer = YES
59 Correct 24 ms 5192 KB answer = YES
60 Correct 43 ms 5176 KB answer = YES
61 Correct 15 ms 4956 KB answer = YES
62 Correct 273 ms 10312 KB answer = NO
63 Execution timed out 788 ms 10312 KB Time limit exceeded
64 Halted 0 ms 0 KB -

Subtask #5
0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4432 KB answer = YES
2 Correct 1 ms 4432 KB answer = YES
3 Correct 1 ms 4432 KB answer = YES
4 Correct 1 ms 4432 KB answer = NO
5 Correct 1 ms 4432 KB answer = YES
6 Correct 1 ms 4432 KB answer = YES
7 Correct 1 ms 4432 KB answer = YES
8 Correct 1 ms 4432 KB answer = YES
9 Correct 2 ms 4432 KB answer = NO
10 Correct 1 ms 4432 KB answer = YES
11 Correct 1 ms 4432 KB answer = YES
12 Correct 2 ms 4488 KB answer = NO
13 Correct 1 ms 4432 KB answer = YES
14 Correct 1 ms 4432 KB answer = YES
15 Correct 1 ms 4432 KB answer = YES
16 Correct 1 ms 4432 KB answer = YES
17 Correct 1 ms 4432 KB answer = YES
18 Correct 1 ms 4432 KB answer = YES
19 Correct 1 ms 4432 KB answer = YES
20 Correct 1 ms 4432 KB answer = YES
21 Correct 1 ms 4600 KB answer = YES
22 Correct 1 ms 4432 KB answer = NO
23 Correct 1 ms 4432 KB answer = NO
24 Correct 2 ms 4432 KB answer = YES
25 Correct 1 ms 4432 KB answer = YES
26 Correct 1 ms 4432 KB answer = YES
27 Correct 2 ms 4432 KB answer = YES
28 Correct 2 ms 4432 KB answer = YES
29 Correct 1 ms 4432 KB answer = YES
30 Correct 2 ms 4432 KB answer = NO
31 Correct 2 ms 4432 KB answer = YES
32 Correct 1 ms 4432 KB answer = YES
33 Correct 1 ms 4432 KB answer = YES
34 Correct 2 ms 4432 KB answer = YES
35 Correct 2 ms 4432 KB answer = YES
36 Correct 1 ms 4432 KB answer = YES
37 Correct 2 ms 4432 KB answer = YES
38 Correct 2 ms 4432 KB answer = YES
39 Correct 2 ms 4688 KB answer = YES
40 Correct 4 ms 4856 KB answer = YES
41 Correct 3 ms 4688 KB answer = NO
42 Correct 4 ms 4688 KB answer = YES
43 Correct 4 ms 4860 KB answer = YES
44 Correct 4 ms 4688 KB answer = YES
45 Correct 4 ms 4688 KB answer = YES
46 Correct 2 ms 4688 KB answer = YES
47 Correct 4 ms 4688 KB answer = YES
48 Correct 5 ms 4688 KB answer = YES
49 Correct 52 ms 5200 KB answer = YES
50 Correct 39 ms 5468 KB answer = YES
51 Correct 39 ms 5456 KB answer = YES
52 Correct 37 ms 5456 KB answer = NO
53 Correct 4 ms 4688 KB answer = YES
54 Correct 7 ms 4800 KB answer = YES
55 Correct 15 ms 4944 KB answer = YES
56 Correct 44 ms 5200 KB answer = YES
57 Correct 28 ms 4944 KB answer = YES
58 Correct 23 ms 4944 KB answer = YES
59 Correct 24 ms 5192 KB answer = YES
60 Correct 43 ms 5176 KB answer = YES
61 Correct 15 ms 4956 KB answer = YES
62 Correct 273 ms 10312 KB answer = NO
63 Execution timed out 788 ms 10312 KB Time limit exceeded
64 Halted 0 ms 0 KB -