#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int N = 3e5 + 5, MOD = 1e9 + 7;
vector<ll> adj[N], vec[N];
ll n, m, v, ans[N], flag = 1, in[N], out[N];
void dfs(int node)
{
for(auto to : adj[node])
{
if(ans[to] != 0 and ans[node] == ans[to])
{
flag = 0;
}
else if(ans[to] == 0)
{
ans[to] = ans[node] + 1;
if(ans[to] > n)
flag = 0;
dfs(to);
}
}
for(auto i : vec[node])
{
if(ans[i] != 0 and ans[i] != ans[node])
{
flag = 0;
}
else if(ans[i] == 0)
{
ans[i] = ans[node];
dfs(i);
}
}
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin >> n >> m >> v;
for(int i = 0; i < v; i++)
{
int a, b;
char ch;
cin >> a >> ch >> b;
if(ch == '<')
{
adj[a].push_back(b);
out[a]++;
in[b]++;
}
else
{
vec[a].push_back(b);
vec[b].push_back(a);
}
}
for(int i = 1; i <= m; i++)
{
if(in[i] == 0 and out[i] > 0)
{
ans[i] = 1;
dfs(i);
}
}
if(!flag)
{
cout << -1 << '\n';
return 0;
}
for(int i = 1; i <= m; i++)
{
if(ans[i] == 0)
{
cout << "?" << '\n';
}
else
{
cout << "K" << ans[i] << '\n';
}
}
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
5 ms |
19292 KB |
Output is correct |
2 |
Correct |
5 ms |
19292 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
53 ms |
25852 KB |
Output is correct |
2 |
Correct |
48 ms |
25500 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
15 ms |
20568 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
160 ms |
31320 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |