oj.uz

Submission #828944

# Submission time Handle Problem Language Result Execution time Memory
828944 2023-08-17T21:23:48 Z Lobo Wall (IOI14_wall) C++17
100 / 100
 905 ms 162368 KB 
#include "wall.h"
#include<bits/stdc++.h>
using namespace std;
#define mp make_pair
#define fr first
#define sc second
#define pb push_back
const int maxk = 5e5+10;
const int maxn = 2e6+10;
const int inf = 1e9+10;
int tra[4*maxk], trb[4*maxk];
vector<int> adds[maxn], rems[maxn];

void build(int no, int l, int r) {
	tra[no] = -inf;
	trb[no] = inf;
	if(l == r) return;
	int lc=2*no,rc=2*no+1,mid=(l+r)>>1;
	build(lc,l,mid);
	build(rc,mid+1,r);
}

void upd(int no, int l, int r, int pos, int newa, int newb) {
	if(l > pos || r < pos) return;
	if(l == r) {
		if(newa != -1) tra[no] = newa;
		if(newb != -1) trb[no] = newb;
		return;
	}
	int lc=2*no,rc=2*no+1,mid=(l+r)>>1;
	upd(lc,l,mid,pos,newa,newb);
	upd(rc,mid+1,r,pos,newa,newb);
	tra[no] = max(tra[lc],tra[rc]);
	trb[no] = min(trb[lc],trb[rc]);
}

pair<int,pair<int,int>> find(int no, int l, int r, int maxa, int minb) {
	if(l == r) return mp(l+1,mp(maxa,minb));
	int lc=2*no,rc=2*no+1,mid=(l+r)>>1;
	if(max(maxa,tra[rc]) < min(minb,trb[rc])) return find(lc,l,mid,max(maxa,tra[rc]),min(minb,trb[rc]));
	else return find(rc,mid+1,r,maxa,minb);
}

void buildWall(int n, int k, int op[], int lf[], int rg[], int h[], int finalHeight[]){
	for(int i = 0; i < k; i++) {
		adds[lf[i]].pb(i);
		rems[rg[i]].pb(i);
	}
	build(1,0,k);
	for(int i = 0; i < n; i++) {
		for(auto j : adds[i]) {
			if(op[j] == 1) {
				upd(1,0,k,j+1,h[j],-1);
			}
			else {
				upd(1,0,k,j+1,-1,h[j]);
			}
		}
		upd(1,0,k,0,0,0);

		auto aux = find(1,0,k,-inf,inf);

		int hcur;
		if(aux.fr-1 == 0) hcur = 0;
		else hcur = h[aux.fr-2];
		int maxa = aux.sc.fr;
		int minb = aux.sc.sc;

		hcur = min(hcur,minb);
		hcur = max(hcur,maxa);

		finalHeight[i] = hcur;

		for(auto j : rems[i]) {
			if(op[j] == 1) {
				upd(1,0,k,j+1,-inf,-1);
			}
			else {
				upd(1,0,k,j+1,-1,inf);
			}
		}
	}
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 94344 KB Output is correct
2 Correct 46 ms 94456 KB Output is correct
3 Correct 46 ms 94248 KB Output is correct
4 Correct 49 ms 94752 KB Output is correct
5 Correct 48 ms 94796 KB Output is correct
6 Correct 50 ms 94748 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 94236 KB Output is correct
2 Correct 364 ms 116984 KB Output is correct
3 Correct 197 ms 107536 KB Output is correct
4 Correct 630 ms 129884 KB Output is correct
5 Correct 365 ms 128776 KB Output is correct
6 Correct 363 ms 126796 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 94168 KB Output is correct
2 Correct 48 ms 94564 KB Output is correct
3 Correct 46 ms 94284 KB Output is correct
4 Correct 52 ms 94768 KB Output is correct
5 Correct 51 ms 94744 KB Output is correct
6 Correct 51 ms 94796 KB Output is correct
7 Correct 52 ms 94232 KB Output is correct
8 Correct 315 ms 120228 KB Output is correct
9 Correct 198 ms 108792 KB Output is correct
10 Correct 630 ms 129872 KB Output is correct
11 Correct 372 ms 128740 KB Output is correct
12 Correct 360 ms 126796 KB Output is correct
13 Correct 48 ms 94156 KB Output is correct
14 Correct 363 ms 120228 KB Output is correct
15 Correct 73 ms 96716 KB Output is correct
16 Correct 535 ms 130156 KB Output is correct
17 Correct 375 ms 127096 KB Output is correct
18 Correct 366 ms 126736 KB Output is correct

Subtask #4
39.0 / 39.0

# Verdict Execution time Memory Grader output
1 Correct 46 ms 94124 KB Output is correct
2 Correct 51 ms 94572 KB Output is correct
3 Correct 47 ms 94364 KB Output is correct
4 Correct 56 ms 94996 KB Output is correct
5 Correct 51 ms 94800 KB Output is correct
6 Correct 54 ms 94796 KB Output is correct
7 Correct 49 ms 94228 KB Output is correct
8 Correct 315 ms 120228 KB Output is correct
9 Correct 200 ms 108788 KB Output is correct
10 Correct 578 ms 129912 KB Output is correct
11 Correct 374 ms 128960 KB Output is correct
12 Correct 358 ms 126844 KB Output is correct
13 Correct 47 ms 94152 KB Output is correct
14 Correct 354 ms 120104 KB Output is correct
15 Correct 72 ms 96772 KB Output is correct
16 Correct 558 ms 130100 KB Output is correct
17 Correct 368 ms 127100 KB Output is correct
18 Correct 386 ms 126824 KB Output is correct
19 Correct 862 ms 162368 KB Output is correct
20 Correct 854 ms 159728 KB Output is correct
21 Correct 905 ms 162356 KB Output is correct
22 Correct 876 ms 159884 KB Output is correct
23 Correct 858 ms 159764 KB Output is correct
24 Correct 856 ms 159780 KB Output is correct
25 Correct 869 ms 159752 KB Output is correct
26 Correct 862 ms 162360 KB Output is correct
27 Correct 899 ms 162280 KB Output is correct
28 Correct 850 ms 159928 KB Output is correct
29 Correct 860 ms 159868 KB Output is correct
30 Correct 865 ms 159920 KB Output is correct