| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 1042921 |
2024-08-03T14:46:43 Z |
vanea |
Wall (IOI14_wall) |
C++14 |
|
452 ms |
25168 KB |
#include <bits/stdc++.h>
#include "wall.h"
using namespace std;
using ll = long long;
const int mxN = 1e7;
array<ll, 2> st[mxN];
array<bool, 2> vis[mxN];
int last[mxN];
void propagate(int node, int l, int r) {
if(vis[node][0]) {
if(l != r) {
int left = node*2, right = node*2+1;
if(vis[left][0]) {
if(st[node][0] > st[left][0]) {
last[left] = 1;
st[left][0] = st[node][0];
}
}
else {
last[left] = 1;
st[left][0] = st[node][0];
}
if(vis[left][1] &&
last[left] == 2 && st[node][0] > st[left][1]) {
st[left][1] = st[node][0];
}
if(vis[right][0]) {
if(st[node][0] >= st[right][0]) {
last[right] = 1;
st[right][0] = st[node][0];
}
}
else {
last[right] = 1;
st[right][0] = st[node][0];
}
if(vis[right][1] &&
last[right] == 2 && st[node][0] > st[right][1]) {
st[right][1] = st[node][0];
}
vis[left][0] = vis[right][0] = true;
vis[node][0] = false;
}
}
if(vis[node][1]) {
if(l != r) {
int left = node*2, right = node*2+1;
if(vis[left][1]) {
if(st[node][1] <= st[left][1]) {
st[left][1] = st[node][1];
last[left] = 2;
}
}
else {
st[left][1] = st[node][1];
last[left] = 2;
}
if(last[left] == 1 && vis[left][1] && st[node][1] < st[left][0]) {
st[left][0] = st[node][1];
}
if(vis[right][1]) {
if(st[node][1] <= st[right][1]) {
st[right][1] = st[node][1];
last[right] = 2;
}
}
else {
st[right][1] = st[node][1];
last[right] = 2;
}
if(last[right] == 1 && vis[right][1] && st[node][1] < st[right][0]) {
st[right][0] = st[node][1];
}
vis[left][1] = vis[right][1] = true;
vis[node][1] = false;
}
}
}
void upd(int node, int l, int r, int l1, int r1, int h, int op) {
propagate(node, l, r);
if(l1 <= l && r1 >= r) {
if(op == 1) {
if(vis[node][0]) {
if(h >= st[node][0]) {
last[node] = 1;
st[node][0] = h;
}
}
else {
last[node] = 1;
st[node][0] = h;
}
if(last[node] == 2 && vis[node][1] && h > st[node][1]) {
st[node][1] = h;
}
vis[node][0] = true;
}
else {
if(vis[node][1]) {
if(h <= st[node][1]) {
last[node] = 2;
st[node][1] = h;
}
}
else {
last[node] = 2;
st[node][1] = h;
}
if(last[node] == 1 && vis[node][0] && h < st[node][0]) {
st[node][0] = h;
}
vis[node][1] = true;
}
propagate(node, l, r);
return ;
}
if(l1 > r || r1 < l) return ;
int mid = (l+r)/2;
upd(node*2, l, mid, l1, r1, h, op);
upd(node*2+1, mid+1, r, l1, r1, h, op);
}
int query(int node, int l, int r, int k) {
propagate(node, l, r);
if(l == r && l == k) {
int ans = 0;
if(vis[node][0] && vis[node][1]) {
if(last[node] == 1) {
ans = st[node][0];
}
else {
ans = min(st[node][0], st[node][1]);
}
}
else if(vis[node][0]) {
ans = st[node][0];
}
return ans;
}
if(l > k || r < k) return 0;
int mid = (l+r)/2;
return query(node*2, l, mid, k) + query(node*2+1, mid+1, r, k);
}
void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]) {
for(int i = 0; i < k; i++) {
upd(1, 0, n-1, left[i], right[i], height[i], op[i]);
}
for(int i = 0; i < n; i++) {
finalHeight[i] = query(1, 0, n-1, i);
//cout << finalHeight[i] << ' ';
}
}
/*
int main()
{
int arr1[10] = {1, 2, 2, 1, 1, 2}, arr2[10] = {1, 4, 3, 0, 2, 6};
int arr3[10] = {8, 9, 6, 5, 2, 7}, arr4[10] = {4, 1, 5, 3, 5, 0};
int arr5[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
buildWall(10, 6, arr1, arr2, arr3, arr4, arr5);
}*/
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
344 KB |
Output is correct |
| 2 |
Correct |
1 ms |
600 KB |
Output is correct |
| 3 |
Incorrect |
1 ms |
344 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
73 ms |
13884 KB |
Output is correct |
| 3 |
Correct |
148 ms |
8788 KB |
Output is correct |
| 4 |
Correct |
452 ms |
24128 KB |
Output is correct |
| 5 |
Correct |
199 ms |
25168 KB |
Output is correct |
| 6 |
Correct |
174 ms |
23380 KB |
Output is correct |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Correct |
1 ms |
456 KB |
Output is correct |
| 3 |
Incorrect |
1 ms |
540 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
348 KB |
Output is correct |
| 2 |
Correct |
1 ms |
348 KB |
Output is correct |
| 3 |
Incorrect |
2 ms |
348 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
