Submission #109041

#	Time	Username	Problem	Language	Result	Execution time	Memory
109041		dantoh000	Wall (IOI14_wall)	C++14	100 / 100	1247 ms	214944 KiB

wall

#include <bits/stdc++.h>
#include "wall.h"
using namespace std;
struct node{
    int s,e,m,omin,omax,flag;
    node *l, *r;
    node (int _s, int _e){
        s = _s, e = _e, m = (s+e)/2;
        omin = 100005, omax = 0, flag = 0;
        if (s != e){
            l = new node(s,m);
            r = new node(m+1,e);
        }
    }
    void value(){
        if (flag == 0) return;
        flag = 0;
        if (s != e){
            l->mini(s,m,omin);
            l->maxi(s,m,omax);
            r->mini(m+1,e,omin);
            r->maxi(m+1,e,omax);
            omax = 0, omin = 100005;
        }
    }
    int mini(int qs, int qe, int x){
        if (qs == s && qe == e){
            omin = min(omin,x);
            omax = min(omax,omin);
            flag = 1;
        }
        else{
            value();
            if (qe <= m) l->mini(qs,qe,x);
            else if (qs > m) r->mini(qs,qe,x);
            else{
                l->mini(qs,m,x);
                r->mini(m+1,qe,x);
            }
        }
    }
    int maxi(int qs, int qe, int x){
        if (qs == s && qe == e){
            omax = max(x,omax);
            omin = max(omax,omin);
            flag = 1;
        }
        else{
            value();
            if (qe <= m) l->maxi(qs,qe,x);
            else if (qs > m) r->maxi(qs,qe,x);
            else{
                l->maxi(qs,m,x);
                r->maxi(m+1,qe,x);
            }
        }
    }
    int qu(int x){
        value();
        if (s == e){
            return omax;
        }
        if (x <= m){
            return l->qu(x);
        }
        else return r->qu(x);
    }
} *root;
void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]){
    root = new node(0,n-1);
    for (int i = 0; i < k; i++){
        if (op[i] == 1){
            root->maxi(left[i],right[i],height[i]);
        }
        else{
            root ->mini(left[i],right[i],height[i]);
        }
    }
    for (int i =0;  i < n; i++){
        finalHeight[i] = root->qu(i);
    }
    return;
}

Compilation message (stderr)

wall.cpp: In member function 'int node::mini(int, int, int)':
wall.cpp:41:5: warning: no return statement in function returning non-void [-Wreturn-type]
     }
     ^
wall.cpp: In member function 'int node::maxi(int, int, int)':
wall.cpp:57:5: warning: no return statement in function returning non-void [-Wreturn-type]
     }
     ^

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