이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
//# pragma GCC optimize("Ofast,no-stack-protector")
//# pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
# pragma GCC optimize("Ofast")
# pragma GCC optimization ("unroll-loops")
# include "bits/stdc++.h"
std::pair<int,int> DR[] = {{-1,0},{0,1},{1,0},{0,-1},{-1,1},{-1,-1},{1,1},{1,-1}};
# define ll long long
# define clock (clock() * 1000.0 / CLOCKS_PER_SEC)
# define rc(s) return cout << s,0
# define rcg(s) cout << s;exit(0)
# define _ ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
# define db(x) cerr << #x << " = " << x << '\n'
# define pb push_back
# define mp make_pair
# define all(s) s.begin(),s.end()
# define sz(x) (int)((x).size())
//# define int ll
using namespace std;
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# define LOCAL
# define sim template < class c
# define ris return * this
# define dor > debug & operator <<
# define eni(x) sim > typename \
enable_if<sizeof dud<c>(0) x 1, debug&>::type operator<<(c i) {
sim > struct rge { c b, e; };
sim > rge<c> range(c i, c j) { return rge<c>{i, j}; }
sim > auto dud(c* x) -> decltype(cerr << *x, 0);
sim > char dud(...);
struct debug {
#ifdef LOCAL
~debug() { cerr << endl; }
eni(!=) cerr << boolalpha << i; ris; }
eni(==) ris << range(begin(i), end(i)); }
sim, class b dor(pair < b, c > d) {
ris << "(" << d.first << ", " << d.second << ")";
}
sim dor(rge<c> d) {
*this << "[";
for (auto it = d.b; it != d.e; ++it)
*this << ", " + 2 * (it == d.b) << *it;
ris << "]";
}
#else
sim dor(const c&) { ris; }
#endif
};
#define show(...) " [" << #__VA_ARGS__ ": " << (__VA_ARGS__) << "] "
int gcd(int a, int b)
{
if(b) return gcd(b,a%b);
return a;
}mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
int n,m,q,p[1 << 17],sze[1 << 17],ans[1 << 17];
vector<pair<int,pair<int,int>>>edges;
vector<pair<int,int>>vec[1 << 17];
int find(int x)
{
if(p[x] == x) return x;
return p[x] = find(p[x]);
}
void unite(int a,int b)
{
a = find(a);
b = find(b);
if(a == b) return ;
if(sze[a] > sze[b]) swap(a,b);
p[a] = b;
sze[b] += sze[a];
}
int32_t main(){_
//freopen("input","r",stdin);
cin >> n >> m;
for(int i = 1;i <= m;i++)
{
int a,b,c;
cin >> a >> b >> c;
edges.pb(mp(c,mp(a,b)));
}
sort(edges.begin(),edges.end());
cin >> q;
for(int i = 1;i <= q;i++)
{
int t,s,w;
cin >> t >> s >> w;
vec[upper_bound(edges.begin(),edges.end(),mp(w - 1,mp(0,0))) - edges.begin()].pb(mp(s,i));
}
for(int i = 1;i <= n;i++)
{
p[i] = i;
sze[i] = 1;
}
for(int i = sz(edges) - 1;i + 1;i--)
{
unite(edges[i].second.first,edges[i].second.second);
for(auto it : vec[i])
{
ans[it.second] = sze[find(it.first)];
}
}
for(int i = 1;i <= q;i++) cout << ans[i] << '\n';
return 0;
}
컴파일 시 표준 에러 (stderr) 메시지
bridges.cpp:4:0: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
# pragma GCC optimization ("unroll-loops")
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