#include <bits/stdc++.h> using namespace std; #define ll long long #define ull unsigned long long #define si(X) scanf("%d", &(X)) #define sll(X) scanf("%lld",&(X)) #define INFL 0x3f3f3f3f3f3f3f3fLL const ll mod = 1e9 + 7; ll gcd(ll a,ll b){if(b==0)return a;return gcd(b,a%b);} ll expo(ll base,ll pow){ll ans = 1; while(pow!=0){if(pow&1==1){ans = ans*base;ans = ans%mod;} base *= base;base%=mod;pow/=2;}return ans;} ll inv(ll x){return expo(x,mod-2);} int dx[8] = {1 , 0 , -1 , 0 , 1 , -1 , -1 , 1}; // last 4 diagonal int dy[8] = {0 , 1 , 0 , -1 , 1 , 1 , -1 , -1}; /*---------------------------------------------------------------------------------------------------------------------*/ const int M = 1e5 + 5; ll pref[M], alpha; set<pair<ll , ll> > se[M]; // distance, timer /* contains pairs of (max_distance, timer) of all leaf nodes attched to node i. */ int N; int timer = 0; int now_time[M]; struct Node{ ll dis; int node; }; Node segTree[4*M]; void merge(int ind){ if(segTree[2*ind].dis > segTree[2*ind + 1].dis){ segTree[ind].dis = segTree[2*ind].dis; segTree[ind].node = segTree[2*ind].node; } else if(segTree[2*ind].dis == segTree[2*ind + 1].dis){ int u = segTree[2*ind].node; int v = segTree[2*ind + 1].node; ll u_tim = now_time[u]; ll v_tim = now_time[v]; if(u_tim > v_tim){ segTree[ind].dis = segTree[2*ind].dis; segTree[ind].node = segTree[2*ind].node; } else{ segTree[ind].dis = segTree[2*ind + 1].dis; segTree[ind].node = segTree[2*ind + 1].node; } } else{ segTree[ind].dis = segTree[2*ind + 1].dis; segTree[ind].node = segTree[2*ind + 1].node; } } void build(int ind , int l , int r){ if(l > r) return; if(l == r){ segTree[ind].dis = pref[l]; segTree[ind].node = l; return; } int mid = (l + r)/2; build(2*ind , l , mid); build(2*ind + 1 , mid + 1 , r); merge(ind); } pair<int , ll> query(int ind , int l , int r , int ql , int qr){ if(l > r || ql > qr || l > qr || r < ql || ql == 0 || qr == 0) return make_pair(-1 , -1); if(l >= ql && r <= qr){ return make_pair(segTree[ind].node , segTree[ind].dis); } int mid = (l + r)/2; pair<int , ll> p1 = query(2*ind , l , mid , ql , qr); pair<int , ll> p2 = query(2*ind + 1 , mid + 1 , r , ql , qr); if(p1.second > p2.second) return p1; return p2; } void update(int ind , int l , int r , int point , ll W){ if(l > r || point < l || point > r ) return; if(l == r){ segTree[ind].dis += W; return; } int mid = (l + r)/2; update(2*ind , l , mid , point , W); update(2*ind + 1 , mid + 1 , r , point , W); merge(ind); } pair<int , ll> find_farthest(int x){ // returns pair of the base node and distance int max_node = x; ll max_dis = -(*se[x].begin()).first; pair<int , ll> ans = make_pair(max_node , max_dis); pair<int , ll> p1 = query(1 , 1 , N , x + 1 , N); p1.second = p1.second - pref[x]; pair<int , ll> p2 = query(1 , 1 , N , 1 , x - 1); p2.second = p2.second + alpha - pref[x]; if(x == 1) p2 = p1; if(x == N) p1 = p2; vector<pair<ll , pair<int , int> > > temp; int u = p1.first; ll u_dis = p1.second; ll u_tim = now_time[u]; int v = p2.first; ll v_dis = p2.second; ll v_tim = now_time[v]; max_node = u; max_dis = u_dis; if((u_dis > v_dis) || (u_dis == v_dis && u_tim > v_tim)){ } else{ p1 = p2; max_node = v; max_dis = v_dis; } p2 = ans; v = p2.first; v_dis = p2.second; v_tim = now_time[v]; if((u_dis > v_dis) || (u_dis == v_dis && u_tim > v_tim)){ } else{ p1 = p2; max_node = v; max_dis = v_dis; } ans.first = max_node; ans.second = max_dis; return ans; } int main(){ si(N); //if(N < 10000) cout<<pref[M+M]; ll el; for(int i = 1 ; i <= N ; i++){ sll(el); alpha += el; pref[i + 1] = pref[i] + el; se[i].insert(make_pair(0 , 0)); } build(1 , 1 , N); int q; si(q); while(q--){ timer++; int typ, x; ll w; si(typ); si(x); if(typ == 1){ pair<int , ll> P = find_farthest(x); int y = P.first; ll omega = P.second; sll(w); pair<ll , ll> PX = *(se[y].begin()); se[y].erase(se[y].begin()); PX.first -= w; PX.second = -timer; se[y].insert(PX); now_time[y] = -timer; update(1 , 1 , N , y , w); } else if(typ == 2){ sll(w); ll pres = -(*se[x].begin()).first; se[x].insert(make_pair(-w , -timer)); if(w >= pres){ now_time[x] = -timer; update(1 , 1 , N , x , w - pres); } } else if(typ == 3){ pair<int , ll> P = find_farthest(x); int y = P.first; ll omega = P.second; pair<ll , ll> PX = *(se[y].begin()); se[y].erase(se[y].begin()); ll max_dis = -PX.first; ll new_max = -(*se[y].begin()).first; now_time[y] = -(*se[y].begin()).second; update(1 , 1 , N , y , new_max - max_dis); } else{ pair<int , ll> P = find_farthest(x); int y = P.first; ll omega = P.second; printf("%lld\n" , omega); } } }
Standard input is empty
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