結果
| 問題 |
No.1054 Union add query
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2020-05-15 22:39:27 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 229 ms / 2,000 ms |
| コード長 | 2,967 bytes |
| コンパイル時間 | 2,212 ms |
| コンパイル使用メモリ | 197,432 KB |
| 最終ジャッジ日時 | 2025-01-10 11:53:04 |
|
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 8 |
ソースコード
/*
confirm 0LL and 1LL
confirm cornercases such as 0
confirm times of cin < 10^6
*/
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
using P = pair<ll, ll>;
using Pld = pair<ld, ld>;
using Vec = vector<ll>;
using VecP = vector<P>;
using VecB = vector<bool>;
using VecC = vector<char>;
using VecD = vector<ld>;
using VecS = vector<string>;
using Graph = vector<VecP>;
template <typename T>
using Vec1 = vector<T>;
template <typename T>
using Vec2 = vector<Vec1<T> >;
#define REP(i, m, n) for(ll i = (m); (i) < (n); ++(i))
#define REPN(i, m, n) for(ll i = (m); (i) <= (n); ++(i))
#define REPR(i, m, n) for(ll i = (m)-1; (i) >= (n); --(i))
#define REPNR(i, m, n) for(ll i = (m); (i) >= (n); --(i))
#define rep(i, n) REP(i, 0, n)
#define repn(i, n) REPN(i, 1, n)
#define repr(i, n) REPR(i, n, 0)
#define repnr(i, n) REPNR(i, n, 1)
#define all(s) (s).begin(), (s).end()
#define pb push_back
#define fs first
#define sc second
template <typename T>
bool chmax(T &a, const T b){if(a < b){a = b; return true;} return false;}
template <typename T>
bool chmin(T &a, const T b){if(a > b){a = b; return true;} return false;}
template <typename T>
ll pow2(const T n){return (1LL << n);}
template <typename T>
void cosp(const T n){cout << n << ' ';}
void co(void){cout << '\n';}
template <typename T>
void co(const T n){cout << n << '\n';}
template <typename T1, typename T2>
void co(pair<T1, T2> p){cout << p.fs << ' ' << p.sc << '\n';}
template <typename T>
void co(const Vec1<T> &v){for(T i : v) cosp(i); co();}
template <typename T>
void co(initializer_list<T> v){for(T i : v) cosp(i); co();}
template <typename T>
void ce(const T n){cerr << n << endl;}
void sonic(){ios::sync_with_stdio(false); cin.tie(0);}
void setp(const ll n){cout << fixed << setprecision(n);}
constexpr int INF = 1e9+1;
constexpr ll LINF = 1e18+1;
constexpr ll MOD = 1e9+7;
//constexpr ll MOD = 998244353;
constexpr ld EPS = 1e-11;
const ld PI = acos(-1);
struct UnionFind{
Vec par;
Vec sum;
ll var;
UnionFind(ll n){
par.resize(2000000);
sum.assign(2000000, 0);
rep(i, 2000000) par[i] = i;
var = n;
}
ll root(ll x){
if(par[x] == x) return x;
ll p = root(par[x]);
if(p != par[x]) sum[x] += sum[par[x]];
return par[x] = p;
}
void unite(ll x, ll y){
x = root(x), y = root(y);
if(x != y){
par[x] = var;
par[y] = var;
var++;
}
}
bool same(ll x, ll y){
return root(x) == root(y);
}
void add(ll a, ll b){
sum[root(a)] += b;
}
ll query(ll x){
if(x == root(x)) return sum[x];
return sum[root(x)] + sum[x];
}
};
int main(void){
sonic();
ll n, q;
cin >> n >> q;
UnionFind uf(n);
rep(i, q){
ll t, a, b;
cin >> t >> a >> b;
if(t == 1){
a--, b--;
uf.unite(a, b);
}else if(t == 2){
a--;
uf.add(a, b);
}else{
a--;
co(uf.query(a));
}
}
return 0;
}