Submission #471453

#	Time	Username	Problem	Language	Result	Execution time	Memory
471453		MohamedFaresNebili	Wall (IOI14_wall)	C++14	0 / 100	723 ms	19368 KiB

wall

#include <bits/stdc++.h>
#include "wall.h"
 
        using namespace std;
 
        using ll  = long long;
        using ld  = long double;
 
        using vl  = vector<long long>;
 
        #define mp make_pair
        #define pb push_back
        #define pp pop_back
        #define ff first
        #define ss second
        #define lb lower_bound
        #define ub upper_bound
        #define all(x) (x).begin() , (x).end()
 
        const int N = 2*100005;
        const long long MOD = 1e9+7;
        const long double EPS = 0.000000001;
        const double PI = 3.14159265358979323846;
        const int nx[4]={1, -1, 0, 0}, ny[4]={0, 0, 1, -1};
 
        long long gcd(int a, int b) { return (b==0?a:gcd(b, a%b)); }
        long long lcm(int a, int b) { return  a*(b/gcd(a, b)); }
        long long fact(int a) { return (a==1?1:a*fact(a-1)); }
 
        ll st[4*200005], lazy[4*200005], p[4*200005];
        void prop(ll v, ll l, ll r) {
            if(l==r||p[v]==-1) return;
            if(p[v]==1) {
				if(p[v*2]==-1||p[v*2]==2) lazy[v*2]=lazy[v];
				else lazy[v*2]=max(lazy[v*2], lazy[v]); 
                p[v*2]=1; st[v*2]=max(st[v*2], lazy[v*2]); 
 
				if(p[v*2+1]==-1||p[v*2+1]==2) lazy[v*2+1]=lazy[v];
				else lazy[v*2+1]=max(lazy[v*2+1], lazy[v]); 
                p[v*2+1]=1; st[v*2+1]=max(st[v*2+1], lazy[v*2+1]);
            }
            else if(p[v]==2) {
                if(p[v*2]==-1||p[v*2]==1) lazy[v*2]=lazy[v];
				else lazy[v*2]=min(lazy[v*2], lazy[v]); 
                p[v*2]=2; st[v*2]=min(st[v*2], lazy[v*2]); 
 
				if(p[v*2+1]==-1||p[v*2+1]==1) lazy[v*2+1]=lazy[v];
				else lazy[v*2+1]=min(lazy[v*2+1], lazy[v]); 
                p[v*2+1]=2; st[v*2+1]=min(st[v*2+1], lazy[v*2+1]);
            }
            p[v]=-1;
        }
        void update0(ll v, ll l, ll r, ll lo, ll hi, ll val) {
            prop(v, l, r);
            if(l>hi||r<lo) return;
            if(l>=lo&&r<=hi) {
				if(p[v]==-1||p[v]==2) lazy[v]=val;
				else lazy[v]=max(lazy[v], val); 
                p[v]=1; st[v]=max(st[v], lazy[v]); 
				prop(v, l, r);
                return;
            }
            update0(v*2, l, (l+r)/2, lo, hi, val);
            update0(v*2+1, (l+r)/2+1, r, lo, hi, val);
        }
        void update(ll v, ll l, ll r, ll lo, ll hi, ll val) {
            prop(v, l, r);
            if(l>hi||r<lo) return;
            if(l>=lo&&r<=hi) {
				if(p[v]==-1||p[v]==1) lazy[v]=val;
                else lazy[v]=min(lazy[v], val); 
				p[v]=2; st[v]=min(st[v], lazy[v]); 
				prop(v, l, r);
                return;
            }
            update(v*2, l, (l+r)/2, lo, hi, val);
            update(v*2+1, (l+r)/2+1, r, lo, hi, val);
        }
        ll query(ll v, ll l, ll r, ll ind) {
            prop(v, l, r);
            if(l==r) return st[v];
            ll mid=(l+r)/2;
            if(ind<=mid) return query(v*2, l, mid, ind);
            else return query(v*2+1, mid+1, r, ind);
        }
 
        void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]){
            memset(p, -1, sizeof p);
            for(ll l=0;l<k;l++) {
                ll t=op[l], a=left[l], b=right[l], w=height[l];
                if(t==1) update0(1, 0, n-1, a, b, w);
                else if(t==2) update(1, 0, n-1, a, b, w);
            }
            for(ll l=0;l<n;l++) finalHeight[l]=query(1, 0, n-1, l);
            return;
        }

• Subtask 1: 0 / 8
• Subtask 2: 0 / 24
• Subtask 3: 0 / 29
• Subtask 4: 0 / 39