Submission #344109

#	Time	Username	Problem	Language	Result	Execution time	Memory
344109		Nurlykhan	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	34 / 100	717 ms	3820 KiB

sortbooks

#include <bits/stdc++.h>

using namespace std;

const int N = (int)2e5 + 10;
const int K = 450;

int n, m;
int w[N];

bool bad[N];
int max_value[N], max_mood[N];
vector<int> v[N / K];

int main() {
    scanf("%d%d", &n, &m);
    for (int i = 0; i < n; i++) {
        scanf("%d", &w[i]);
    }
    for (int i = 0; i < n; i++) {
        int block_id = i / K;

        max_value[block_id] = max(max_value[block_id], w[i]);
        v[block_id].push_back(w[i]);

        for (int j = i; j < (block_id + 1) * K; j++) {
            if (w[i] > w[j]) {
                max_mood[block_id] = max(max_mood[block_id], w[i] + w[j]);
            }
        }
    }
    for (int i = 0; i <= (n - 1) / K; i++) {
        sort(v[i].begin(), v[i].end());
    }

    while (m--) {
        int l, r, k;
        scanf("%d%d%d", &l, &r, &k);
        --l, --r;
        int mx = 0, mxx = 0;
        for (int i = l; i <= r; ) {
            if (i % K == 0 && i + K - 1 <= r) {
                int block_id = i / K;
                mx = max(mx, max_mood[block_id]);

                int id = lower_bound(v[block_id].begin(), v[block_id].end(), mxx) - v[block_id].begin() - 1;
                if (id >= 0) {
                    mx = max(mx, mxx + v[block_id][id]);
                }

                mxx = max(mxx, max_value[block_id]);
                i += K;
            } else {
                if (mxx <= w[i]) {
                    mxx = w[i];
                } else {
                    mx = max(mx, mxx + w[i]);
                }
                i++;
            }
        }

        if (k >= mx) {
            printf("1\n");
        } else {
            printf("0\n");
        }
    }
    return 0;
}

Compilation message (stderr)

sortbooks.cpp: In function 'int main()':
sortbooks.cpp:16:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   16 |     scanf("%d%d", &n, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~
sortbooks.cpp:18:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   18 |         scanf("%d", &w[i]);
      |         ~~~~~^~~~~~~~~~~~~
sortbooks.cpp:38:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   38 |         scanf("%d%d%d", &l, &r, &k);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 8 / 8
• Subtask 2: 9 / 9
• Subtask 3: 0 / 13
• Subtask 4: 17 / 17
• Subtask 5: 0 / 30
• Subtask 6: 0 / 23