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Submission #24156

# Submission time Handle Problem Language Result Execution time Memory
24156 2017-05-31T18:46:50 Z Nirjhor Wall (IOI14_wall) C++14
100 / 100
 959 ms 80160 KB 
// IOI 2014 - Wall

#include <bits/stdc++.h>
#include "wall.h"

using namespace std;

typedef pair <int, int> node;

#define Min first
#define Max second

const int N = 2000010;
const int INF = 1e9 + 10;

node tree[4 * N];

void push (int u, int b, int e) {
  if (b == e) return;
  int l = u << 1, r = l | 1;
  tree[l].Min = min(tree[l].Min, tree[u].Min);
  tree[l].Min = max(tree[l].Min, tree[u].Max);
  tree[l].Max = min(tree[l].Max, tree[u].Min);
  tree[l].Max = max(tree[l].Max, tree[u].Max);
  tree[r].Min = min(tree[r].Min, tree[u].Min);
  tree[r].Min = max(tree[r].Min, tree[u].Max);
  tree[r].Max = min(tree[r].Max, tree[u].Min);
  tree[r].Max = max(tree[r].Max, tree[u].Max);
}

void update (int u, int b, int e, int from, int to, int v, int type) {
  push(u, b, e);
  if (b > to or e < from) return;
  if (b >= from and e <= to) {
    if (type) {
      tree[u].Min = min(tree[u].Min, v);
      tree[u].Max = min(tree[u].Max, v);
    } else {
      tree[u].Min = max(tree[u].Min, v);
      tree[u].Max = max(tree[u].Max, v);
    }
    return;
  }
  tree[u].Min = INF, tree[u].Max = -INF;
  int l = u << 1, r = l | 1, m = b + e >> 1;
  update(l, b, m, from, to, v, type);
  update(r, m + 1, e, from, to, v, type);
}

void traverse (int u, int b, int e, int res[]) {
  if (b == e) {
    res[b - 1] = tree[u].Min;
    return;
  }
  push(u, b, e);
  int l = u << 1, r = l | 1, m = b + e >> 1;
  traverse(l, b, m, res), traverse(r, m + 1, e, res);
}

void buildWall (int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]) {
  for (int i = 0; i < k; ++i) {
    update(1, 1, n, left[i] + 1, right[i] + 1, height[i], op[i] - 1);
  }
  traverse(1, 1, n, finalHeight);
  return;
}

Compilation message

wall.cpp: In function 'void update(int, int, int, int, int, int, int)':
wall.cpp:45:36: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int l = u << 1, r = l | 1, m = b + e >> 1;
                                    ^
wall.cpp: In function 'void traverse(int, int, int, int*)':
wall.cpp:56:36: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   int l = u << 1, r = l | 1, m = b + e >> 1;
                                    ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 64520 KB Output is correct
2 Correct 0 ms 64656 KB Output is correct
3 Correct 0 ms 64520 KB Output is correct
4 Correct 6 ms 64656 KB Output is correct
5 Correct 6 ms 64656 KB Output is correct
6 Correct 6 ms 64656 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 64520 KB Output is correct
2 Correct 196 ms 72344 KB Output is correct
3 Correct 226 ms 67916 KB Output is correct
4 Correct 679 ms 72736 KB Output is correct
5 Correct 433 ms 72736 KB Output is correct
6 Correct 426 ms 72736 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 64520 KB Output is correct
2 Correct 0 ms 64656 KB Output is correct
3 Correct 0 ms 64520 KB Output is correct
4 Correct 6 ms 64656 KB Output is correct
5 Correct 3 ms 64656 KB Output is correct
6 Correct 6 ms 64656 KB Output is correct
7 Correct 0 ms 64520 KB Output is correct
8 Correct 173 ms 72344 KB Output is correct
9 Correct 249 ms 67916 KB Output is correct
10 Correct 749 ms 72736 KB Output is correct
11 Correct 423 ms 72736 KB Output is correct
12 Correct 439 ms 72736 KB Output is correct
13 Correct 0 ms 64520 KB Output is correct
14 Correct 216 ms 72344 KB Output is correct
15 Correct 39 ms 65148 KB Output is correct
16 Correct 739 ms 72736 KB Output is correct
17 Correct 449 ms 72736 KB Output is correct
18 Correct 386 ms 72736 KB Output is correct

Subtask #4
39.0 / 39.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 64520 KB Output is correct
2 Correct 0 ms 64656 KB Output is correct
3 Correct 0 ms 64520 KB Output is correct
4 Correct 9 ms 64656 KB Output is correct
5 Correct 9 ms 64656 KB Output is correct
6 Correct 9 ms 64656 KB Output is correct
7 Correct 0 ms 64520 KB Output is correct
8 Correct 209 ms 72344 KB Output is correct
9 Correct 236 ms 67916 KB Output is correct
10 Correct 696 ms 72736 KB Output is correct
11 Correct 366 ms 72736 KB Output is correct
12 Correct 433 ms 72736 KB Output is correct
13 Correct 0 ms 64520 KB Output is correct
14 Correct 176 ms 72344 KB Output is correct
15 Correct 49 ms 65148 KB Output is correct
16 Correct 689 ms 72736 KB Output is correct
17 Correct 429 ms 72736 KB Output is correct
18 Correct 403 ms 72736 KB Output is correct
19 Correct 923 ms 80160 KB Output is correct
20 Correct 846 ms 80160 KB Output is correct
21 Correct 823 ms 80160 KB Output is correct
22 Correct 906 ms 80160 KB Output is correct
23 Correct 919 ms 80160 KB Output is correct
24 Correct 896 ms 80160 KB Output is correct
25 Correct 869 ms 80160 KB Output is correct
26 Correct 883 ms 80160 KB Output is correct
27 Correct 899 ms 80160 KB Output is correct
28 Correct 959 ms 80160 KB Output is correct
29 Correct 869 ms 80160 KB Output is correct
30 Correct 956 ms 80160 KB Output is correct