oj.uz

Submission #255075

# Submission time Handle Problem Language Result Execution time Memory
255075 2020-07-31T07:54:50 Z davitmarg Graph (BOI20_graph) C++17
100 / 100
 198 ms 28112 KB 
/*
DavitMarg
In a honky-tonk,
Down in Mexico
*/
#include <iostream>
#include <algorithm>
#include <cmath>
#include <vector>
#include <string>
#include <cstring>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
#include <queue>
#include <iomanip>
#include <bitset>
#include <stack>
#include <cassert>
#include <iterator>
#include <fstream>
#define mod 1000000007ll
#define LL long long
#define LD long double
#define MP make_pair
#define PB push_back
#define all(v) v.begin(), v.end()
#define fastIO ios::sync_with_stdio(false); cin.tie(0)
using namespace std;

const int N = 200005;

int n, m,used[N],d[N];
LD val, a[N];
vector<pair<int, int>> g[N];

vector<pair<int,LD>> vals;
set<LD> x;

void dfs(int v)
{
    vals.push_back(MP(v, a[v]));
    used[v] = 1;
    for (int i = 0; i < g[v].size(); i++)
    {
        int to = g[v][i].first;
        int val = g[v][i].second;
        if (used[to])
        {
            if (d[v] != d[to])
            {
                if (a[v] + a[to] != val)
                {
                    cout << "NO" << endl;
                    exit(0);
                }
            }
            else
            {
                LD X = (val - a[v] - a[to]) / 2.;
                if (d[v] == 0)
                    x.insert(X);
                else
                    x.insert(-X);
            }
            continue;
        }
        d[to] = d[v] ^ 1;
        a[to] = val - a[v];
        dfs(to);
    }
}

int main()
{
    fastIO;
    cin >> n >> m;
    while (m--)
    {
        int a, b, c;
        cin >> a >> b >> c;
        g[a].PB(MP(b, c));
        g[b].PB(MP(a, c));
    }
    for (int i = 1; i <= n; i++)
    {
        if (used[i])
            continue;
        x.clear();
        vals.clear();
        dfs(i);

        if (x.size() > 1)
        {
            cout << "NO" << endl;
            exit(0);
        }
        LD X = 0;
        if (!x.empty())
            X = *x.begin();
        else
        {
            for (int j = 0; j < vals.size(); j++)
                if (!d[vals[j].first])
                    vals[j].second *= -1;
            sort(all(vals), [](pair<int, LD> a, pair<int, LD> b) {
                return a.second < b.second;
            });
            X = vals[vals.size() / 2].second;
        }

        for (int j = 0; j < vals.size(); j++)
            if (!d[vals[j].first])
                a[vals[j].first] += X;
            else
                a[vals[j].first] -= X;
    }
    cout << "YES" << endl;
    for (int i = 1; i <= n; i++)
        cout << a[i] << " ";
    cout << endl;

    return 0;
}

/*


*/

Compilation message

Graph.cpp: In function 'void dfs(int)':
Graph.cpp:45:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < g[v].size(); i++)
                     ~~^~~~~~~~~~~~~
Graph.cpp: In function 'int main()':
Graph.cpp:104:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for (int j = 0; j < vals.size(); j++)
                             ~~^~~~~~~~~~~~~
Graph.cpp:113:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int j = 0; j < vals.size(); j++)
                         ~~^~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB answer = YES
2 Correct 3 ms 4992 KB answer = YES
3 Correct 3 ms 4992 KB answer = YES
4 Correct 3 ms 4992 KB answer = NO
5 Correct 3 ms 4992 KB answer = YES
6 Correct 3 ms 4992 KB answer = YES
7 Correct 3 ms 4992 KB answer = YES
8 Correct 3 ms 4992 KB answer = YES
9 Correct 3 ms 4992 KB answer = NO
10 Correct 3 ms 4992 KB answer = YES
11 Correct 3 ms 4992 KB answer = YES
12 Correct 3 ms 4992 KB answer = NO
13 Correct 3 ms 4992 KB answer = YES
14 Correct 5 ms 4992 KB answer = YES
15 Correct 3 ms 4992 KB answer = YES
16 Correct 3 ms 4992 KB answer = YES
17 Correct 3 ms 4992 KB answer = YES
18 Correct 4 ms 4992 KB answer = YES
19 Correct 4 ms 4992 KB answer = YES
20 Correct 4 ms 4992 KB answer = YES
21 Correct 4 ms 4992 KB answer = YES
22 Correct 3 ms 4992 KB answer = NO
23 Correct 4 ms 4992 KB answer = NO

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB answer = YES
2 Correct 3 ms 4992 KB answer = YES
3 Correct 3 ms 4992 KB answer = YES
4 Correct 3 ms 4992 KB answer = NO
5 Correct 3 ms 4992 KB answer = YES
6 Correct 3 ms 4992 KB answer = YES
7 Correct 3 ms 4992 KB answer = YES
8 Correct 3 ms 4992 KB answer = YES
9 Correct 3 ms 4992 KB answer = NO
10 Correct 3 ms 4992 KB answer = YES
11 Correct 3 ms 4992 KB answer = YES
12 Correct 3 ms 4992 KB answer = NO
13 Correct 3 ms 4992 KB answer = YES
14 Correct 5 ms 4992 KB answer = YES
15 Correct 3 ms 4992 KB answer = YES
16 Correct 3 ms 4992 KB answer = YES
17 Correct 3 ms 4992 KB answer = YES
18 Correct 4 ms 4992 KB answer = YES
19 Correct 4 ms 4992 KB answer = YES
20 Correct 4 ms 4992 KB answer = YES
21 Correct 4 ms 4992 KB answer = YES
22 Correct 3 ms 4992 KB answer = NO
23 Correct 4 ms 4992 KB answer = NO
24 Correct 3 ms 4992 KB answer = YES
25 Correct 4 ms 4992 KB answer = YES
26 Correct 3 ms 5120 KB answer = YES
27 Correct 3 ms 5120 KB answer = YES
28 Correct 3 ms 5120 KB answer = YES
29 Correct 3 ms 5120 KB answer = YES
30 Correct 3 ms 4992 KB answer = NO
31 Correct 3 ms 4992 KB answer = YES
32 Correct 3 ms 4992 KB answer = YES
33 Correct 3 ms 4992 KB answer = YES
34 Correct 3 ms 5120 KB answer = YES
35 Correct 3 ms 4992 KB answer = YES
36 Correct 3 ms 4992 KB answer = YES

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB answer = YES
2 Correct 3 ms 4992 KB answer = YES
3 Correct 3 ms 4992 KB answer = YES
4 Correct 3 ms 4992 KB answer = NO
5 Correct 3 ms 4992 KB answer = YES
6 Correct 3 ms 4992 KB answer = YES
7 Correct 3 ms 4992 KB answer = YES
8 Correct 3 ms 4992 KB answer = YES
9 Correct 3 ms 4992 KB answer = NO
10 Correct 3 ms 4992 KB answer = YES
11 Correct 3 ms 4992 KB answer = YES
12 Correct 3 ms 4992 KB answer = NO
13 Correct 3 ms 4992 KB answer = YES
14 Correct 5 ms 4992 KB answer = YES
15 Correct 3 ms 4992 KB answer = YES
16 Correct 3 ms 4992 KB answer = YES
17 Correct 3 ms 4992 KB answer = YES
18 Correct 4 ms 4992 KB answer = YES
19 Correct 4 ms 4992 KB answer = YES
20 Correct 4 ms 4992 KB answer = YES
21 Correct 4 ms 4992 KB answer = YES
22 Correct 3 ms 4992 KB answer = NO
23 Correct 4 ms 4992 KB answer = NO
24 Correct 3 ms 4992 KB answer = YES
25 Correct 4 ms 4992 KB answer = YES
26 Correct 3 ms 5120 KB answer = YES
27 Correct 3 ms 5120 KB answer = YES
28 Correct 3 ms 5120 KB answer = YES
29 Correct 3 ms 5120 KB answer = YES
30 Correct 3 ms 4992 KB answer = NO
31 Correct 3 ms 4992 KB answer = YES
32 Correct 3 ms 4992 KB answer = YES
33 Correct 3 ms 4992 KB answer = YES
34 Correct 3 ms 5120 KB answer = YES
35 Correct 3 ms 4992 KB answer = YES
36 Correct 3 ms 4992 KB answer = YES
37 Correct 3 ms 5120 KB answer = YES
38 Correct 3 ms 5120 KB answer = YES
39 Correct 3 ms 5120 KB answer = YES
40 Correct 4 ms 5248 KB answer = YES
41 Correct 3 ms 5120 KB answer = NO
42 Correct 4 ms 5248 KB answer = YES
43 Correct 6 ms 5120 KB answer = YES
44 Correct 4 ms 5120 KB answer = YES
45 Correct 6 ms 5120 KB answer = YES
46 Correct 4 ms 5120 KB answer = YES
47 Correct 6 ms 5248 KB answer = YES
48 Correct 4 ms 5248 KB answer = YES

Subtask #4
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB answer = YES
2 Correct 3 ms 4992 KB answer = YES
3 Correct 3 ms 4992 KB answer = YES
4 Correct 3 ms 4992 KB answer = NO
5 Correct 3 ms 4992 KB answer = YES
6 Correct 3 ms 4992 KB answer = YES
7 Correct 3 ms 4992 KB answer = YES
8 Correct 3 ms 4992 KB answer = YES
9 Correct 3 ms 4992 KB answer = NO
10 Correct 3 ms 4992 KB answer = YES
11 Correct 3 ms 4992 KB answer = YES
12 Correct 3 ms 4992 KB answer = NO
13 Correct 3 ms 4992 KB answer = YES
14 Correct 5 ms 4992 KB answer = YES
15 Correct 3 ms 4992 KB answer = YES
16 Correct 3 ms 4992 KB answer = YES
17 Correct 3 ms 4992 KB answer = YES
18 Correct 4 ms 4992 KB answer = YES
19 Correct 4 ms 4992 KB answer = YES
20 Correct 4 ms 4992 KB answer = YES
21 Correct 4 ms 4992 KB answer = YES
22 Correct 3 ms 4992 KB answer = NO
23 Correct 4 ms 4992 KB answer = NO
24 Correct 3 ms 4992 KB answer = YES
25 Correct 4 ms 4992 KB answer = YES
26 Correct 3 ms 5120 KB answer = YES
27 Correct 3 ms 5120 KB answer = YES
28 Correct 3 ms 5120 KB answer = YES
29 Correct 3 ms 5120 KB answer = YES
30 Correct 3 ms 4992 KB answer = NO
31 Correct 3 ms 4992 KB answer = YES
32 Correct 3 ms 4992 KB answer = YES
33 Correct 3 ms 4992 KB answer = YES
34 Correct 3 ms 5120 KB answer = YES
35 Correct 3 ms 4992 KB answer = YES
36 Correct 3 ms 4992 KB answer = YES
37 Correct 3 ms 5120 KB answer = YES
38 Correct 3 ms 5120 KB answer = YES
39 Correct 3 ms 5120 KB answer = YES
40 Correct 4 ms 5248 KB answer = YES
41 Correct 3 ms 5120 KB answer = NO
42 Correct 4 ms 5248 KB answer = YES
43 Correct 6 ms 5120 KB answer = YES
44 Correct 4 ms 5120 KB answer = YES
45 Correct 6 ms 5120 KB answer = YES
46 Correct 4 ms 5120 KB answer = YES
47 Correct 6 ms 5248 KB answer = YES
48 Correct 4 ms 5248 KB answer = YES
49 Correct 13 ms 6272 KB answer = YES
50 Correct 13 ms 6780 KB answer = YES
51 Correct 13 ms 6908 KB answer = YES
52 Correct 7 ms 5760 KB answer = NO
53 Correct 4 ms 5120 KB answer = YES
54 Correct 5 ms 5376 KB answer = YES
55 Correct 8 ms 5760 KB answer = YES
56 Correct 12 ms 6268 KB answer = YES
57 Correct 12 ms 5888 KB answer = YES
58 Correct 11 ms 6016 KB answer = YES
59 Correct 11 ms 6016 KB answer = YES
60 Correct 14 ms 6016 KB answer = YES
61 Correct 8 ms 5756 KB answer = YES
62 Correct 60 ms 9960 KB answer = NO
63 Correct 70 ms 11128 KB answer = YES
64 Correct 66 ms 11120 KB answer = NO
65 Correct 78 ms 11064 KB answer = YES
66 Correct 8 ms 5248 KB answer = YES

Subtask #5
42.0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB answer = YES
2 Correct 3 ms 4992 KB answer = YES
3 Correct 3 ms 4992 KB answer = YES
4 Correct 3 ms 4992 KB answer = NO
5 Correct 3 ms 4992 KB answer = YES
6 Correct 3 ms 4992 KB answer = YES
7 Correct 3 ms 4992 KB answer = YES
8 Correct 3 ms 4992 KB answer = YES
9 Correct 3 ms 4992 KB answer = NO
10 Correct 3 ms 4992 KB answer = YES
11 Correct 3 ms 4992 KB answer = YES
12 Correct 3 ms 4992 KB answer = NO
13 Correct 3 ms 4992 KB answer = YES
14 Correct 5 ms 4992 KB answer = YES
15 Correct 3 ms 4992 KB answer = YES
16 Correct 3 ms 4992 KB answer = YES
17 Correct 3 ms 4992 KB answer = YES
18 Correct 4 ms 4992 KB answer = YES
19 Correct 4 ms 4992 KB answer = YES
20 Correct 4 ms 4992 KB answer = YES
21 Correct 4 ms 4992 KB answer = YES
22 Correct 3 ms 4992 KB answer = NO
23 Correct 4 ms 4992 KB answer = NO
24 Correct 3 ms 4992 KB answer = YES
25 Correct 4 ms 4992 KB answer = YES
26 Correct 3 ms 5120 KB answer = YES
27 Correct 3 ms 5120 KB answer = YES
28 Correct 3 ms 5120 KB answer = YES
29 Correct 3 ms 5120 KB answer = YES
30 Correct 3 ms 4992 KB answer = NO
31 Correct 3 ms 4992 KB answer = YES
32 Correct 3 ms 4992 KB answer = YES
33 Correct 3 ms 4992 KB answer = YES
34 Correct 3 ms 5120 KB answer = YES
35 Correct 3 ms 4992 KB answer = YES
36 Correct 3 ms 4992 KB answer = YES
37 Correct 3 ms 5120 KB answer = YES
38 Correct 3 ms 5120 KB answer = YES
39 Correct 3 ms 5120 KB answer = YES
40 Correct 4 ms 5248 KB answer = YES
41 Correct 3 ms 5120 KB answer = NO
42 Correct 4 ms 5248 KB answer = YES
43 Correct 6 ms 5120 KB answer = YES
44 Correct 4 ms 5120 KB answer = YES
45 Correct 6 ms 5120 KB answer = YES
46 Correct 4 ms 5120 KB answer = YES
47 Correct 6 ms 5248 KB answer = YES
48 Correct 4 ms 5248 KB answer = YES
49 Correct 13 ms 6272 KB answer = YES
50 Correct 13 ms 6780 KB answer = YES
51 Correct 13 ms 6908 KB answer = YES
52 Correct 7 ms 5760 KB answer = NO
53 Correct 4 ms 5120 KB answer = YES
54 Correct 5 ms 5376 KB answer = YES
55 Correct 8 ms 5760 KB answer = YES
56 Correct 12 ms 6268 KB answer = YES
57 Correct 12 ms 5888 KB answer = YES
58 Correct 11 ms 6016 KB answer = YES
59 Correct 11 ms 6016 KB answer = YES
60 Correct 14 ms 6016 KB answer = YES
61 Correct 8 ms 5756 KB answer = YES
62 Correct 60 ms 9960 KB answer = NO
63 Correct 70 ms 11128 KB answer = YES
64 Correct 66 ms 11120 KB answer = NO
65 Correct 78 ms 11064 KB answer = YES
66 Correct 8 ms 5248 KB answer = YES
67 Correct 107 ms 25052 KB answer = YES
68 Correct 102 ms 24924 KB answer = YES
69 Correct 95 ms 24928 KB answer = YES
70 Correct 138 ms 28112 KB answer = YES
71 Correct 101 ms 25180 KB answer = YES
72 Correct 167 ms 15336 KB answer = YES
73 Correct 142 ms 15464 KB answer = YES
74 Correct 74 ms 16616 KB answer = YES
75 Correct 34 ms 12396 KB answer = NO
76 Correct 14 ms 6396 KB answer = YES
77 Correct 45 ms 7668 KB answer = YES
78 Correct 58 ms 9840 KB answer = YES
79 Correct 100 ms 14444 KB answer = YES
80 Correct 85 ms 16612 KB answer = YES
81 Correct 71 ms 19432 KB answer = NO
82 Correct 140 ms 24284 KB answer = YES
83 Correct 140 ms 25180 KB answer = YES
84 Correct 155 ms 25220 KB answer = YES
85 Correct 118 ms 25180 KB answer = YES
86 Correct 105 ms 25052 KB answer = YES
87 Correct 87 ms 14704 KB answer = NO
88 Correct 161 ms 17124 KB answer = YES
89 Correct 104 ms 10872 KB answer = YES
90 Correct 97 ms 10872 KB answer = YES
91 Correct 104 ms 10872 KB answer = YES
92 Correct 53 ms 10224 KB answer = YES
93 Correct 63 ms 10224 KB answer = YES
94 Correct 76 ms 24800 KB answer = NO
95 Correct 52 ms 10488 KB answer = NO
96 Correct 198 ms 24044 KB answer = YES
97 Correct 53 ms 24804 KB answer = NO