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Submission #936230

# Submission time Handle Problem Language Result Execution time Memory
936230 2024-03-01T12:54:42 Z peterandvoi Wall (IOI14_wall) C++17
100 / 100
 663 ms 75776 KB 
#include <bits/stdc++.h>

#include "wall.h"

using namespace std;

#ifdef ngu
#include "debug.h"
#else
#define debug(...) 42
#endif

const int INF = (int) 1e9;

struct segment_tree {
    int n;
    vector<int> add, rmv, s;

    segment_tree() {};

    segment_tree(int n): n(n) {
        add.resize(4 << __lg(n), -INF);
        rmv.resize(4 << __lg(n), INF);
        s.resize(4 << __lg(n));
    };

    void apply(int id, int x, int y) {
        s[id] = max(s[id], x);
        s[id] = min(s[id], y);
        if (y < add[id]) {
            add[id] = rmv[id] = y;
        } else if (x > rmv[id]) {
            add[id] = rmv[id] = x;
        } else {
            add[id] = max(add[id], x);
            rmv[id] = min(rmv[id], y);
        }
    }

    void push(int id) {
        if (add[id] != -INF || rmv[id] != INF) {
            apply(id << 1, add[id], rmv[id]);
            apply(id << 1 | 1, add[id], rmv[id]);
            add[id] = -INF;
            rmv[id] = INF;
        }
    }

    void upd(int id, int l, int r, int u, int v, int x, int y) {
        if (u <= l && r <= v) {
            apply(id, x, y);
            return;
        }
        push(id);
        int mid = l + r >> 1;
        if (u <= mid) {
            upd(id << 1, l, mid, u, v, x, y);
        }
        if (mid < v) {
            upd(id << 1 | 1, mid + 1, r, u, v, x, y);
        }
    }

    void upd(int l, int r, int x, int y) {
        upd(1, 0, n - 1, l, r, x, y);
    }

    int get(int i) {
        int id = 1, l = 0, r = n - 1;
        while (l < r) {
            int mid = l + r >> 1;
            push(id);
            id <<= 1;
            if (i <= mid) {
                r = mid;
            } else {
                l = mid + 1;
                id |= 1;
            }
        }
        return s[id];
    }
};

#ifdef ngu
const int N = (int) 1e6 + 5;

#define left phan
#define right minh

int n, k;
int op[N], left[N], right[N], height[N], finalHeight[N];
#endif

void buildWall(int n, int k, int op[], int left[], int right[], int height[], int finalHeight[]){
    segment_tree st(n);
    for (int i = 0; i < k; ++i) {
        st.upd(left[i], right[i], op[i] == 1 ? height[i] : -INF, op[i] == 2 ? height[i] : INF);
    }
    for (int i = 0; i < n; ++i) {
        finalHeight[i] = st.get(i);
    }
}

#ifdef ngu
signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    #ifdef ngu
    freopen("test.inp", "r", stdin);
    freopen("test.out", "w", stdout);
    #endif
    cin >> n >> k;
    for (int i = 0; i < k; ++i) {
        cin >> op[i] >> left[i] >> right[i] >> height[i];
    }
    buildWall(n, k, op, left, right, height, finalHeight);
    for (int i = 0; i < n; ++i) {
        cout << finalHeight[i] << " ";
    }
}
#endif

Compilation message

wall.cpp: In member function 'void segment_tree::upd(int, int, int, int, int, int, int)':
wall.cpp:55:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   55 |         int mid = l + r >> 1;
      |                   ~~^~~
wall.cpp: In member function 'int segment_tree::get(int)':
wall.cpp:71:25: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   71 |             int mid = l + r >> 1;
      |                       ~~^~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 432 KB Output is correct
2 Correct 2 ms 568 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 6 ms 956 KB Output is correct
5 Correct 4 ms 860 KB Output is correct
6 Correct 4 ms 860 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 500 KB Output is correct
2 Correct 114 ms 13920 KB Output is correct
3 Correct 143 ms 6824 KB Output is correct
4 Correct 486 ms 21208 KB Output is correct
5 Correct 200 ms 21764 KB Output is correct
6 Correct 185 ms 20216 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 2 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 5 ms 860 KB Output is correct
5 Correct 4 ms 892 KB Output is correct
6 Correct 4 ms 856 KB Output is correct
7 Correct 0 ms 440 KB Output is correct
8 Correct 111 ms 13820 KB Output is correct
9 Correct 135 ms 8056 KB Output is correct
10 Correct 398 ms 21160 KB Output is correct
11 Correct 191 ms 21840 KB Output is correct
12 Correct 183 ms 20340 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 119 ms 13968 KB Output is correct
15 Correct 28 ms 2136 KB Output is correct
16 Correct 494 ms 21216 KB Output is correct
17 Correct 191 ms 20584 KB Output is correct
18 Correct 186 ms 20584 KB Output is correct

Subtask #4
39.0 / 39.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 600 KB Output is correct
3 Correct 1 ms 496 KB Output is correct
4 Correct 6 ms 860 KB Output is correct
5 Correct 4 ms 892 KB Output is correct
6 Correct 4 ms 856 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 119 ms 13908 KB Output is correct
9 Correct 139 ms 8408 KB Output is correct
10 Correct 390 ms 21220 KB Output is correct
11 Correct 198 ms 21840 KB Output is correct
12 Correct 178 ms 20308 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 114 ms 13828 KB Output is correct
15 Correct 27 ms 2284 KB Output is correct
16 Correct 495 ms 21156 KB Output is correct
17 Correct 192 ms 20748 KB Output is correct
18 Correct 196 ms 20872 KB Output is correct
19 Correct 551 ms 75672 KB Output is correct
20 Correct 562 ms 75604 KB Output is correct
21 Correct 551 ms 75736 KB Output is correct
22 Correct 663 ms 75640 KB Output is correct
23 Correct 546 ms 75716 KB Output is correct
24 Correct 554 ms 75600 KB Output is correct
25 Correct 570 ms 75644 KB Output is correct
26 Correct 558 ms 75744 KB Output is correct
27 Correct 571 ms 75604 KB Output is correct
28 Correct 543 ms 75628 KB Output is correct
29 Correct 558 ms 75776 KB Output is correct
30 Correct 569 ms 75604 KB Output is correct