#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#define in(x) freopen(x, "r", stdin)
#define out(x) freopen(x, "w", stdout)
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
//#pragma GCC optimize("Ofast,nso-stack-protector,unroll-loops,fast-math,-O3")
#define F first
#define S second
#define pb push_back
#define N +300500
#define M ll(1e9 + 7)
#define sz(x) (int)x.size()
#define re return
#define oo ll(1e9)
#define el '\n'
#define Max_A int(1e9)
//#define el endl
#define pii pair <int, int>
#define piii pair <int, pair <int, int> >
#define psi pair <string, int>
#define err ld(1e-9)
#define Max_S int(3e6)
#define last(x) x.back()
#define all(x) (x).begin(), (x).end()
#define allr(x) (x).rbegin(), (x).rend()
#define arr_all(x, n) (x + 1), (x + 1 + n)
#define vi vector<int>
using namespace std;
//using namespace __gnu_pbds;
//typedef tree <int, null_type, less_equal <int> , rb_tree_tag, tree_order_statistics_node_update> ordered_set;
typedef long long ll;
typedef long double ld;
map <string, int> mp;
int q, id;
string k, s;
int mrk[N];
bool mk[N];
vector <int> g[N], G[N], prd[N], pred[N];
vi vec1;
void check_cycles(int v, bool &bad)
{
if (bad) return;
if (mrk[v] == 1)
{
bad = 1;
return;
}
if (mrk[v] == 2)
return;
mrk[v] = 1;
for (auto u : G[v])
{
if (bad)
return;
check_cycles(u, bad);
}
mrk[v] = 2;
}
void dfs(int v)
{
if (mrk[v])
return;
mrk[v] = 1;
for (auto u : prd[v])
dfs(u);
}
void up(int v, bool &bad, bool &vis)
{
if (vis)
return;
if (mrk[v] == 2)
{
vis = 1;
return;
}
if (mrk[v] == 1)
{
bad = 1;
return;
}
for (auto u : prd[v])
up(u, bad, vis);
}
void go_up(int v)
{
if (mk[v])
return;
vec1.pb(v);
mk[v] = 1;
for (auto u : prd[v])
go_up(u);
}
int main()
{
// srand(time(0));
cout.precision(3);
cout << fixed;
ios_base::sync_with_stdio(0);
iostream::sync_with_stdio(0);
ios::sync_with_stdio(0);
cin.tie(NULL);
cout.tie(NULL);
// in("input.txt");
// out("output.txt");
cin >> q;
id = 0;
while (q--)
{
bool bad = 0, initdo = 0;
cin >> k;
if (mp.find(k) == mp.end())
mp[k] = id++;
else bad = 1, initdo = 1;
vector <string> vec;
cin >> s >> s;
int kol = 0;
while (s != ";")
{
kol++;
vec.pb(s);
if (mp.find(s) == mp.end())
bad = 1;
cin >> s;
}
sort(all(vec));
int i = 1;
while (i < sz(vec) && vec[i - 1] != vec[i]) i++;
bad = (bad | (i < sz(vec)));
if (!bad)
{
for (int i = 0; i < id; i++)
G[i] = g[i], prd[i] = pred[i], mrk[i] = 0;
for (auto s : vec)
{
prd[mp[k]].pb(mp[s]);
G[mp[s]].pb(mp[k]);
}
for (int i = 0; i < id; i++)
if (!mrk[i] && !bad && sz(prd[i]) == 0)
check_cycles(i, bad);
if (!bad)
{
vec1.clear();
for (int i = 0; i < id; i++)
mk[i] = 0;
go_up(v);
for (auto p : vec1)
{
for (int i = 0; i < id; i++)
mrk[i] = 0;
mrk[p] = 2;
for (auto p1 : prd[p])
dfs(p1);
for (auto p1 : vec1)
{
if (p1 == p || mrk[p1] || bad)
continue;
for (auto p2 : prd[p1])
{
if (bad)
break;
if (mrk[p2])
continue;
bool vis = 0, old_bad = bad;
up(p2, bad, vis);
if (vis)
bad = old_bad;
}
}
if (bad)
break;
}
}
}
if (!bad)
{
for (auto s : vec)
{
pred[mp[k]].pb(mp[s]);
g[mp[s]].pb(mp[k]);
}
}
else if (!initdo)
mp.erase(mp.find(k)), id--;
cout << (bad ? "greska" : "ok") << el;
}
}
Compilation message
dijament.cpp: In function 'int main()':
dijament.cpp:180:23: error: 'v' was not declared in this scope
180 | go_up(v);
| ^
