#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
#define ff first
#define ss second
#define int long long
int n, m, v;
vector<pair<int, int> > edges;
vector<int> adj[1000005];
int par[1000005];
void dfs(int u, int p){
if(par[u]) return;
par[u] = p;
for(int v : adj[u]) dfs(v, u);
}
vector< int > D[1000005], R[1000005]; int d[1000005], r[1000005];
int dfs_main(int u, vector< int > *D, int *d) {
if (d[u] != 0) return d[u];
for (int j : D[u]) d[u] = max(d[u], dfs_main(j, D, d));
return ++d[u];
}
signed main(){
ios_base::sync_with_stdio(false); cin.tie(NULL);
cin >> n >> m >> v;
while(v--){
int a, b, char c; cin >> a >> c >> b;
if(c == '<') edges.push_back({a, b});
else{
adj[a].push_back(b); adj[b].push_back(a);
}
}
for(int i = 1; i <= m; i++) dfs(i, i);
for (auto e : E) {
D[com[e.first]].push_back(com[e.second]);
R[com[e.second]].push_back(com[e.first]);
}
for(int i = 1; i < m + 1; i++) dfs_main(par[i], D, d);
for(int i = 1; i < m + 1; i++) dfs_main(par[i], R, r);
for(int i = 1; i < m + 1; i++){
if(d[par[i]] + r[par[i]] - 1 == n) cout << 'K' << r[par[i]] << '\n';
else cout << "?\n";
}
}
Compilation message
kovanice.cpp: In function 'int main()':
kovanice.cpp:32:19: error: expected unqualified-id before 'char'
32 | int a, b, char c; cin >> a >> c >> b;
| ^~~~
kovanice.cpp:32:39: error: 'c' was not declared in this scope
32 | int a, b, char c; cin >> a >> c >> b;
| ^
kovanice.cpp:39:19: error: 'E' was not declared in this scope
39 | for (auto e : E) {
| ^
kovanice.cpp:40:11: error: 'com' was not declared in this scope; did you mean 'cos'?
40 | D[com[e.first]].push_back(com[e.second]);
| ^~~
| cos
