Submission #758382

#	Time	Username	Problem	Language	Result	Execution time	Memory
758382		Dan4Life	Wall (IOI14_wall)	C++17	8 / 100	3048 ms	13924 KiB

wall

#include "wall.h"
#include <bits/stdc++.h>
using namespace std;
const int mxN = (int)2e5+10;
int n, k, a[mxN];
array<int,2> seg[mxN*2];

void prop(int p, int l, int r){
    if(l==r) return; return;
    int mid = (l+r)/2; int rp = p+2*(mid-l+1);
    for(int i : {0,1}){
        seg[p+1][i]=seg[p][i];
        seg[rp][i]=seg[p][i];
    }
}

void upd(int i, int j, int t, int v, int p=0, int l=0, int r=n-1){
    if(i>r or j<l or i>j) return; prop(p,l,r);
    int mid = (l+r)/2; int rp = p+2*(mid-l+1);
    if(i<=l and r<=j){
        if(t==1){
            //if(seg[p][0]>=v) return;
            if(seg[p][1]<=v and l==r){ seg[p][0]=seg[p][1]=v; return; }
            if(l!=r) upd(i,j,t,v,p+1,l,mid), upd(i,j,t,v,rp,mid+1,r);
        }
        else{
            //if(seg[p][1]<=v) return;
            if(seg[p][0]>=v and l==r) {seg[p][0]=seg[p][1]=v; return; }
            if(l!=r) upd(i,j,t,v,p+1,l,mid), upd(i,j,t,v,rp,mid+1,r);
        }
        return;
    }
    upd(i,j,t,v,p+1,l,mid), upd(i,j,t,v,rp,mid+1,r);
    seg[p] = {min(seg[p+1][0],seg[rp][0]), max(seg[p+1][1],seg[rp][1])};
}

void query(int p=0, int l=0, int r=n-1){
    if(l==r){ a[l]=seg[p][0]; return; } prop(p,l,r);
    int mid = (l+r)/2; int rp = p+2*(mid-l+1);
    query(p+1,l,mid), query(rp,mid+1,r);
}

void buildWall(int N, int k, int o[], int l[], int r[], int h[], int ans[]){
    n = N;
    for(int i = 0; i < k; i++) upd(l[i],r[i],o[i],h[i]);
    query(); for(int i = 0; i < n; i++) ans[i]=a[i];
}

Compilation message (stderr)

wall.cpp: In function 'void prop(int, int, int)':
wall.cpp:9:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
    9 |     if(l==r) return; return;
      |     ^~
wall.cpp:9:22: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
    9 |     if(l==r) return; return;
      |                      ^~~~~~
wall.cpp: In function 'void upd(int, int, int, int, int, int, int)':
wall.cpp:18:5: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
   18 |     if(i>r or j<l or i>j) return; prop(p,l,r);
      |     ^~
wall.cpp:18:35: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
   18 |     if(i>r or j<l or i>j) return; prop(p,l,r);
      |                                   ^~~~

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