| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 1110451 |
2024-11-09T13:18:47 Z |
LucasLe |
Graph (BOI20_graph) |
C++17 |
|
2 ms |
6480 KB |
#include <bits/stdc++.h>
#define int long long
#define fi first
#define se second
using namespace std;
typedef pair <int , int> pii;
const int maxn = 2e5 + 7;
int n , m;
double ans[maxn];
vector <pii> g[maxn];
bool vis[maxn];
pair <double , double> val[maxn];
vector <int> node;
bool conf;
double found;
void dfs(int u , int p)
{
vis[u] = 1;
node.push_back(u);
for(pii tmp: g[u])
{
int v = tmp.fi;
int w = tmp.se;
if(v == p) continue;
if(!vis[v])
{
val[v].fi = -1*val[u].fi;
val[v].se = w - val[u].se;
dfs(v , u);
}
else if(val[v].fi == val[u].fi)
{
conf = 1;
found = (1.0*(w - val[v].se - val[u].se)/2.0)*val[v].fi;
}
}
}
void solve()
{
cin >> n >> m;
for(int i = 1; i <= m; i++)
{
int u , v , w;
cin >> u >> v >> w;
g[u].push_back({v , w});
g[v].push_back({u , w});
}
for(int i = 1; i <= n; i++)
{
if(!vis[i])
{
node.clear();
conf = 0;
val[i].fi = 1.0;
val[i].se = 0.0;
dfs(i , 0);
if(conf == 0)
{
vector <int> v;
for(int u: node)
{
v.push_back(val[u].se);
v.push_back(val[u].se*-1.0);
}
sort(v.begin() , v.end());
found = v[((int)(v.size()) - 1)/2];
//cout << found << '\n';
}
for(int u: node)
{
ans[u] = found*val[u].fi + val[u].se;
}
}
}
for(int u = 1; u <= n; u++)
{
for(pii tmp: g[u])
{
int v = tmp.fi;
int w = tmp.se;
if(ans[u] + ans[v] != w)
{
cout << "NO" << '\n';
return;
}
}
}
cout << "YES" << '\n';
for(int u = 1; u <= n; u++) cout << ans[u] << ' ';
}
signed main()
{
ios_base::sync_with_stdio(false);
cin.tie(0); cout.tie(0);
//freopen("sol.inp" ,"r" , stdin);
//freopen("sol.out" , "w" , stdout);
solve();
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 2 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 3 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 4 |
Correct |
2 ms |
6480 KB |
answer = NO |
| 5 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 6 |
Incorrect |
2 ms |
6480 KB |
participant answer is larger than the answer of jury |
| 7 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 2 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 3 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 4 |
Correct |
2 ms |
6480 KB |
answer = NO |
| 5 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 6 |
Incorrect |
2 ms |
6480 KB |
participant answer is larger than the answer of jury |
| 7 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 2 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 3 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 4 |
Correct |
2 ms |
6480 KB |
answer = NO |
| 5 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 6 |
Incorrect |
2 ms |
6480 KB |
participant answer is larger than the answer of jury |
| 7 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 2 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 3 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 4 |
Correct |
2 ms |
6480 KB |
answer = NO |
| 5 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 6 |
Incorrect |
2 ms |
6480 KB |
participant answer is larger than the answer of jury |
| 7 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 2 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 3 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 4 |
Correct |
2 ms |
6480 KB |
answer = NO |
| 5 |
Correct |
2 ms |
6480 KB |
answer = YES |
| 6 |
Incorrect |
2 ms |
6480 KB |
participant answer is larger than the answer of jury |
| 7 |
Halted |
0 ms |
0 KB |
- |
