Submission #1197560

#	Time	Username	Problem	Language	Result	Execution time	Memory
1197560		shadow_sami	The Potion of Great Power (CEOI20_potion)	C++20	56 / 100	3080 ms	48780 KiB

potion

#include<bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
using namespace std;
typedef long long int ll;
typedef vector<ll> vi;
typedef vector<vector<ll>> vvi;
typedef pair<ll,ll> pi;
typedef map<ll,ll> mi;
typedef long double ld;
typedef vector<ld> vd;
typedef vector<vector<ld>> vvd;
typedef pair<ld,ld> pd;
#define ff first
#define ss second
#define srt(a) sort(a.begin(),a.end());
#define fip(k, n) for (ll i = k; i < n; i++)
#define fjp(k, n) for (ll j = k; j < n; j++)
#define fin(k, n) for (ll i = k; i >= n; i--)
#define fjn(k, n) for (ll j = k; j >= n; j--)
#define fp(k, n, m) for (ll k = n; k < m; k++)
#define fn(k, n, m) for (ll k = n; k >= m; k--)
#define ordered_set tree<pi, null_type,less< pi >, rb_tree_tag,tree_order_statistics_node_update>
#define totalOne(n) __builtin_popcount(n)
#define backZero(n) __builtin_ctzll(n)
#define frontZero(n) __builtin_clzll(n)
#define fx(k) for ( auto x : k )
#define test ll t;cin >> t;while (t--)
#define nli "\n"

// ==========================(debug)============================================================================================== //

#ifdef SAMI
	#define debug(x) cerr<<#x;cerr<<" ";_printn(x);cerr<<nli;
	#define debg() cerr<<nli;
#else
	#define debug(x)
	#define debg() 
#endif


void _printn(ll x){ cerr<<x<<" "; }
void _printn(int x){ cerr<<x<<" "; }
void _printn(ld x){ cerr<<x<<" "; }
void _printn(double x){ cerr<<x<<" "; }
void _printn(string x){ cerr<<x<<" "; }
void _printn(char x){ cerr<<x<<" "; }
void _printn(bool x){ cerr<<x<<" "; }
template<class T,class V>void _printn(pair<T,V> vv);
template<class T> void _printn(vector<T> vv);
template<class T> void _printn(set<T> vv);
template<class T,class V> void _printn(map<T,V> vv);
template<class T> void _printn(multiset<T> vv);
template<class T,class V>void _printn(pair<T,V> vv){ cerr<<"( ";_printn(vv.ff);cerr<<",";_printn(vv.ss);cerr<<")";}
template<class T> void _printn(vector<T> vv){ cerr<<"[ "; for(auto xx:vv){ _printn(xx);cerr<<" "; } cerr<<"]"; };
template<class T> void _printn(set<T> vv){ cerr<<"{ "; for(auto xx:vv){ _printn(xx);cerr<<" "; } cerr<<"}"; };
template<class T> void _printn(multiset<T> vv){ cerr<<"{ "; for(auto xx:vv){ _printn(xx);cerr<<" "; } cerr<<"}"; };
template<class T,class V> void _printn(map<T,V> vv){ cerr<<"{ "; for(auto xx:vv){ _printn(xx);cerr<<" "; } cerr<<"}"; };

// ==========================(debug)============================================================================================== //

ll n,m,tp,tp2,res,cnt,sum,tptp,ans;
const ll mx = 1e5+5;
const ll mod = 1e9+7;

// ==========================(MOD)=============================================================================================== //

ll mod_add(ll aa,ll bb){ return ((aa%mod)+(bb%mod))%mod; }
ll mod_minus(ll aa,ll bb){ return (((aa%mod)-(bb%mod))+10*mod)%mod; }
ll mod_mul(ll aa,ll bb){ return ((aa%mod)*(bb%mod))%mod; }
ll mod_power(ll aa,ll bb){ aa%=mod; ll empowered = 1; bb%=mod-1; while(bb > 0){ if(bb & 1) empowered = mod_mul(empowered,aa); bb = bb >> 1; aa = mod_mul(aa,aa); } return empowered; }
ll mod_divi(ll aa,ll bb){ aa=mod_mul(aa,mod_power(bb,mod-2)); return aa; }

// ==========================(MOD)=============================================================================================== //

bool f = false;
ll sr,de;
ll a[mx];
vi v,v2;
vector<pi> adj[mx];
set<ll> st;
ll pt = 0;
ll limit = 29;
vector<pi> lis[mx];
vector<vi> mem;

ll l,r,mid;

ll get(ll i,ll q){	
	l = 0;
	r = lis[i].size() - 1;
	pt = -1;	
	while(l<=r){
		mid = l + (r-l) / 2;
		if(lis[i][mid].ff <= q){
			pt = mid;			
			l = mid + 1;
		}else
			r = mid - 1;
	}	
	return pt;
}

ll get2(ll i,ll q){	
	l = 0;
	r = adj[i].size() - 1;
	pt = -1;	
	while(l<=r){
		mid = l + (r-l) / 2;
		if(adj[i][mid].ss >= q){
			pt = mid;			
			r = mid - 1;
		}else
			l = mid + 1;
			
	}	
	return pt;
}

void init(int N, int D, int H[]) {
	n = N;
	fip(0,N)
		a[i] = H[i];	
	return;
}

void curseChanges(int U, int A[], int B[]) {
	fip(0,n+1)	
		adj[i].clear();
	fip(0,U){
		sr = A[i];
		de = B[i];		
		adj[sr].push_back({de,i+1});
		adj[de].push_back({sr,i+1});
	}
	tptp = 0;
	v.clear();
	mem.push_back(v);
	tptp++;
	fip(0,n){
		cnt = 0;		
		lis[i].push_back({0,0});
		cnt++;
		st.clear();
		fx(adj[i]){			
			if(st.find(x.ff)==st.end())
				st.insert(x.ff);
			else
				st.erase(st.find(x.ff));
			if(cnt%limit){
				lis[i].push_back({x.ss,-1});
			}else{
				lis[i].push_back({x.ss,tptp});
				v.clear();
				fx(st)v.push_back(x);
				mem.push_back(v);
				tptp++;
			}
			cnt++;
		}
	}
	return;
}

int question(int xx, int yy, int V) {
	ans = 1e9;
	v.clear();
	v2.clear();
	tp = get(xx,V);
	while(tp!=-1 && lis[xx][tp].ss==-1)
		tp--;
	res = (tp==-1?0:lis[xx][tp].ss);
	st.clear();
	fx(mem[res])
		st.insert(x);
	res = get2(xx,lis[xx][tp].ff+1);
	if(res!=-1){
		fip(res,adj[xx].size()){
			if(adj[xx][i].ss > V)
				break;
			if(st.find(adj[xx][i].ff)==st.end())
				st.insert(adj[xx][i].ff);
			else
				st.erase(st.find(adj[xx][i].ff));
		}
	}
	fx(st)
		v.push_back(a[x]);
	tp2 = get(yy,V);
	while(tp2!=-1 && lis[yy][tp2].ss==-1)
		tp2--;
	res = (tp2==-1?0:lis[yy][tp2].ss);
	st.clear();
	fx(mem[res])
		st.insert(x);
	res = get2(yy,lis[yy][tp2].ff+1);
	if(res!=-1){
		fip(res,adj[yy].size()){
			if(adj[yy][i].ss > V)
				break;
			if(st.find(adj[yy][i].ff)==st.end())
				st.insert(adj[yy][i].ff);
			else
				st.erase(st.find(adj[yy][i].ff));
		}
	}
	fx(st)
		v2.push_back(a[x]);
	srt(v);
	srt(v2);
	ans = 1e9;
	if(!v.size() || !v2.size())return ans;
	tp = 0;
	tp2 = 0;
	while(tp<(ll)v.size())	{
		while(tp2+1<(ll)v2.size() && v2[tp2+1] <= v[tp])
			tp2++;
		ans = min(ans,abs(v[tp]-v2[tp2]));
		if(tp2+1<(ll)v2.size())
			ans = min(ans,abs(v[tp]-v2[tp2+1]));			
		tp++;
	}	
    return ((int)ans);
}

#ifdef SAMI
int main(){
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());	
    #ifdef SAMI
        freopen("input1.txt", "r", stdin);
        freopen("output1.txt", "w", stdout);
        freopen("error1.txt", "w", stderr);
    #endif // ONLINE_JUDGE

    int N, D, U, Q;
    std::cin >> N >> D >> U >> Q;
	int *F = new int[N];
	for (int i=0; i<N; i++)
	std::cin >> F[i];
	init(N, D, F);

	int *A = new int[U], *B = new int[U];
	for (int i=0; i<U; i++) {
	std::cin >> A[i] >> B[i];
	}
	curseChanges(U, A, B);

	bool correct = true;
	for (int i=0; i<Q; i++) {
	int X,Y,V,CorrectAnswer;
	/*
	std::cin >> X >> Y >> V >> CorrectAnswer;
	int YourAnswer = question(X,Y,V);
	if (YourAnswer != CorrectAnswer) {
	  std::cout << "WA! Question: " << i
		<< " (X=" << X << ", Y=" << Y << ", V=" << V << ") "
		<<  "Your answer: " << YourAnswer
	            << " Correct Answer: " << CorrectAnswer << std::endl;
	  correct = false;
	} else {
	  std::cerr << YourAnswer << " - OK" << std::endl;
	}
	}

	if (correct) {
	std::cout << "Correct." << std::endl;
	} else std::cout << "Incorrect." << std::endl;	  
	*/
		std::cin >> X >> Y >> V;
		int YourAnswer = question(X,Y,V);
		cout<<YourAnswer<<nli;
	}
        
    cerr << "Time elapsed: " << setprecision(6) << 1000.0 * clock() / CLOCKS_PER_SEC << "ms\n";
    return 0;
}

#endif

• Subtask 1: 0 / 0
• Subtask 2: 17 / 17
• Subtask 3: 0 / 14
• Subtask 4: 18 / 18
• Subtask 5: 21 / 21
• Subtask 6: 0 / 30