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Intel_destroying_arry.cpp
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Intel_destroying_arry.cpp
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/*
* J1K7_7
*
* You can use my contents on a Creative Commons - Attribution 4.0 International - CC BY 4.0 License. XD
* - JASKAMAL KAINTH
*/
#include <iostream>
#include <sstream>
#include <fstream>
#include <string>
#include <cstring>
#include <vector>
#include <deque>
#include <queue>
#include <stack>
#include <set>
#include <cstring>
#include <cassert>
#include <list>
#include <map>
#include <unordered_map>
#include <iomanip>
#include <algorithm>
#include <functional>
#include <utility>
#include <bitset>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <cstdio>
#include <limits>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<long long> vll;
#define left(x) (x << 1)
#define right(x) (x << 1) + 1
#define mid(l, r) ((l + r) >> 1)
#define mp make_pair
#define pb push_back
#define eb emplace_back
#define all(a) a.begin(),a.end()
#define debug(x) {cerr <<#x<<" = " <<x<<"\n"; }
#define debug2(x, y) {cerr <<#x<<" = " <<x<<", "<<#y <<" = " <<y <<"\n";}
#define debug3(x, y, z) {cerr <<#x<<" = " <<x<<", "<<#y <<" = " <<y <<", "<<#z<<" = "<<z<<"\n";}
#define debug4(x, y, z, w) {cerr <<#x<<" = " <<x<<", "<<#y <<" = " <<y <<", "<<#z<<" = "<<z<<", "<<#w << " = " <<w <<"\n";}
#define ss second
#define ff first
#define m0(x) memset(x,0,sizeof(x))
#define builtinpopcount __builtin_popcount(x)
inline int nextint(){ int x; scanf("%d",&x); return x; }
inline ll nextll() { ll x; scanf("%lld",&x); return x; }
#define gc getchar
template <typename T> void scanint(T &x) {
T c = gc(); while(((c < 48) || (c > 57)) && (c!='-')) c = gc();
bool neg = false; if(c == '-') neg = true; x = 0; for(;c < 48 || c > 57;c=gc());
for(;c > 47 && c < 58;c=gc()) x = (x*10) + (c - 48); if(neg) x = -x;
}
// variadics
template<typename T >T min_ ( T a , T b ) { return a > b ? b : a ; }
template < typename T , typename... Ts > T min_( T first , Ts... last ){ return min_(first, min_(last...)); }
// lambda exp auto square = [](int inp) { return inp * inp; } ;
template<class T, class S> std::ostream& operator<<(std::ostream &os, const std::pair<T, S> &t) {
os<<"("<<t.first<<", "<<t.second<<")";
return os;
}
template<typename T> ostream& operator<< (ostream& out, const vector<T>& v) {
out << "["; size_t last = v.size() - 1; for(size_t i = 0; i < v.size(); ++i) {
out << v[i]; if (i != last) out << ", "; } out << "]"; return out;
}
ll pwr(ll base, ll p, ll mod){
ll ans = 1; while(p) { if(p&1) ans=(ans*base)%mod; base=(base*base)%mod; p/=2; } return ans;
}
ll gcd(ll a, ll b) { return b == 0 ? a : gcd(b,a%b); }
ll lcm(ll a, ll b) { return a*(b/gcd(a,b)); }
const long double PI = (long double)(3.1415926535897932384626433832795);
const ll mx_ll = numeric_limits<ll> :: max();
const int mx_int = numeric_limits<int> :: max();
const int mod = 1e9+7;
const int oo = 0x3f3f3f3f;
const ll OO = 0x3f3f3f3f3f3f3f3fll;
const ld TIME_LIMIT = 5.000001;
inline int break_TIME_LIMIT() { if(( 1.0 * clock() / CLOCKS_PER_SEC ) > TIME_LIMIT) return 1; else return 0; }
/* if(break_TIME_LIMIT())
break;
*/
const int maxn = 3e5+7;
int a[maxn] , did[maxn];
ll csum[maxn];
int rankN[maxn];
int parentN[maxn];
int n; // number of nodes
inline void make_set()
{
for(int i = 1; i <= n; i++)
parentN[i] = rankN[i] = i;
}
inline int find_set(int u)
{
if(parentN[u] != u )
parentN[u] = find_set(parentN[u]);
return parentN[u];
}
inline void union_set(int u,int v)
{
int pu = find_set(u);
int pv = find_set(v);
if(pu == pv)
return ;
if(rankN[pu] > rankN[pv])
{
parentN[pv] = pu;
csum[pu] += csum[pv];
}
else
{
parentN[pu] = pv;
csum[pv] += csum[pu];
if(rankN[pu] == rankN[pv])
rankN[pv]++;
}
}
ll ans[maxn];
bool vis[maxn];
int main()
{
scanint(n);
for(int i = 1; i <= n; i++)
{
scanint(a[i]);
csum[i] = a[i];
}
for(int i = 1; i <= n; i++)
scanint(did[i]);
make_set();
ll curr = 0;
for(int i = n; i >= 1; i--)
{
ans[i] = curr;
int pos = did[i];
vis[pos] = 1;
if(pos+1 <= n and vis[pos+1])
union_set(pos,pos+1);
if(pos-1 >= 1 and vis[pos-1])
union_set(pos-1,pos);
curr = max(curr, csum[find_set(pos)]);
}
for(int i = 1; i <= n; i++)
printf("%lld\n",ans[i]);
return 0;
}