結果
| 問題 |
No.1054 Union add query
|
| コンテスト | |
| ユーザー |
tute7627
|
| 提出日時 | 2020-05-15 22:07:24 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 199 ms / 2,000 ms |
| コード長 | 3,708 bytes |
| コンパイル時間 | 2,173 ms |
| コンパイル使用メモリ | 199,608 KB |
| 最終ジャッジ日時 | 2025-01-10 11:41:09 |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 8 |
コンパイルメッセージ
main.cpp: In member function ‘ll WeightedUnionFind::debug()’:
main.cpp:107:3: warning: no return statement in function returning non-void [-Wreturn-type]
107 | }
| ^
ソースコード
//#define _GLIBCXX_DEBUG
#include<bits/stdc++.h>
using namespace std;
#define endl '\n'
#define lfs cout<<fixed<<setprecision(10)
#define ALL(a) (a).begin(),(a).end()
#define ALLR(a) (a).rbegin(),(a).rend()
#define spa << " " <<
#define fi first
#define se second
#define MP make_pair
#define MT make_tuple
#define PB push_back
#define EB emplace_back
#define rep(i,n,m) for(ll i = (n); i < (ll)(m); i++)
#define rrep(i,n,m) for(ll i = (ll)(m) - 1; i >= (ll)(n); i--)
using ll = long long;
using ld = long double;
const ll MOD1 = 1e9+7;
const ll MOD9 = 998244353;
const ll INF = 1e18;
using P = pair<ll, ll>;
template<typename T1, typename T2>
bool chmin(T1 &a,T2 b){if(a>b){a=b;return true;}else return false;}
template<typename T1, typename T2>
bool chmax(T1 &a,T2 b){if(a<b){a=b;return true;}else return false;}
ll median(ll a,ll b, ll c){return a+b+c-max({a,b,c})-min({a,b,c});}
void ans1(bool x){if(x) cout<<"Yes"<<endl;else cout<<"No"<<endl;}
void ans2(bool x){if(x) cout<<"YES"<<endl;else cout<<"NO"<<endl;}
void ans3(bool x){if(x) cout<<"Yay!"<<endl;else cout<<":("<<endl;}
template<typename T1,typename T2>
void ans(bool x,T1 y,T2 z){if(x)cout<<y<<endl;else cout<<z<<endl;}
template<typename T>
void debug(vector<vector<T>>&v,ll h,ll w){for(ll i=0;i<h;i++)
{cout<<v[i][0];for(ll j=1;j<w;j++)cout spa v[i][j];cout<<endl;}};
void debug(vector<string>&v,ll h,ll w){for(ll i=0;i<h;i++)
{for(ll j=0;j<w;j++)cout<<v[i][j];cout<<endl;}};
template<typename T>
void debug(vector<T>&v,ll n){if(n!=0)cout<<v[0];
for(ll i=1;i<n;i++)cout spa v[i];cout<<endl;};
template<typename T>
vector<vector<T>>vec(ll x, ll y, T w){
vector<vector<T>>v(x,vector<T>(y,w));return v;}
ll gcd(ll x,ll y){ll r;while(y!=0&&(r=x%y)!=0){x=y;y=r;}return y==0?x:y;}
vector<ll>dx={1,0,-1,0,1,1,-1,-1};
vector<ll>dy={0,1,0,-1,1,-1,1,-1};
template<typename T>
vector<T> make_v(size_t a,T b){return vector<T>(a,b);}
template<typename... Ts>
auto make_v(size_t a,Ts... ts){
return vector<decltype(make_v(ts...))>(a,make_v(ts...));
}
template<typename T1, typename T2>
ostream &operator<<(ostream &os, const pair<T1, T2>&p){
return os << p.first << " " << p.second;
}
//mt19937 mt(chrono::steady_clock::now().time_since_epoch().count());
struct WeightedUnionFind {
vector<ll> data;
vector<ll> difweight;
WeightedUnionFind(ll size){
data.assign(size,-1);
difweight.assign(size,0);
}
bool unite(ll x, ll y, ll w) { //y=x+w
w += weight(x); w -= weight(y);
x = root(x); y = root(y);
if (x != y) {
if (data[y] < data[x]) swap(x, y), w = -w;
data[x] += data[y];
data[y] = x;
difweight[y] = w;
}
return x != y;
}
bool find(ll x, ll y) {
return root(x) == root(y);
}
ll diff(ll x,ll y){//y-x
return weight(y)-weight(x);
}
ll weight(ll x){ //根との相対位置
root(x);
return difweight[x];
}
ll root(ll x) {
if(data[x] < 0){
return x;
}
else{
ll tmp = root(data[x]);
difweight[x] += difweight[data[x]];
return data[x] = tmp;
}
}
ll size(ll x) {
return -data[root(x)];
}
ll debug(){
rep(i,0,data.size()){
root(i);
cout<<i spa data[i] spa difweight[i]<<endl;
}
cout<<endl;
}
};
int main(){
cin.tie(nullptr);
ios_base::sync_with_stdio(false);
ll res=0,buf=0;
bool judge = true;
ll n,q;cin>>n>>q;
WeightedUnionFind uf(n);
vector<ll>v(n);
auto f=[&](ll x){
return v[uf.root(x)]+uf.weight(x);
};
while(q--){
ll t,a,b;cin>>t>>a>>b;a--;
if(t==1){
b--;
if(uf.find(a,b))continue;
else{
uf.unite(a,b,f(b)-f(a));
}
}
if(t==2){
v[uf.root(a)]+=b;
}
if(t==3){
cout<<f(a)<<endl;
}
}
return 0;
}
tute7627