Submission #329488

#	Time	Username	Problem	Language	Result	Execution time	Memory
329488		dolphingarlic	Circus (Balkan15_CIRCUS)	C++14	0 / 100	43 ms	13268 KiB

circus

#include "circus.h"

#include <bits/stdc++.h>
using namespace std;

struct State {
    int cost, idx, change_cnt;
    bool dir; // Left = 0
};

bool operator<(State A, State B) { return A.cost > B.cost; }

int n, m, p[100001], mn[100001];

void init(int N, int M, int P[]){
    n = N, m = M;
    memcpy(p, P, sizeof p);
    sort(p, p + n);
    p[n] = m;

    memset(mn, 0x3f, sizeof mn);
    priority_queue<State> pq;
    pq.push({mn[n] = 0, n, 0, 0});
    while (pq.size()) {
        State curr = pq.top();
        pq.pop();
        if (curr.cost != mn[curr.idx]) continue;

        for (int i = 0; i < curr.idx; i++) {
            if (p[curr.idx] - p[i] >= curr.cost) {
                if (p[curr.idx] - p[i] < mn[i]) {
                    pq.push({mn[i] = p[curr.idx] - p[i], i, curr.change_cnt + curr.dir, 0});
                }
            }
            // else break;
        }
        if (curr.change_cnt != 2) {
            for (int i = n - 1; i > curr.idx; i++) {
                if (p[i] - p[curr.idx] >= curr.cost) {
                    if (p[i] - p[curr.idx] < mn[i]) {
                        pq.push({mn[i] = p[i] - p[curr.idx], i, curr.change_cnt + !curr.dir, 1});
                    }
                }
                // else break;
            }
        }
    }
}

int minLength(int D) {
    int ans = m - D;
    for (int i = 0; i < n; i++) if (abs(D - p[i]) >= mn[i]) {
        ans = min(ans, abs(D - p[i]));
    }
    return ans;
}

Compilation message (stderr)

grader.cpp: In function 'int main()':
grader.cpp:14:12: warning: unused variable 'max_code' [-Wunused-variable]
   14 |  long long max_code;
      |            ^~~~~~~~
grader.cpp:16:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   16 |  scanf("%d%d", &N, &M);
      |  ~~~~~^~~~~~~~~~~~~~~~
grader.cpp:18:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   18 |   scanf("%d", &P[i]);
      |   ~~~~~^~~~~~~~~~~~~
grader.cpp:21:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   21 |  scanf("%d", &Q);
      |  ~~~~~^~~~~~~~~~
grader.cpp:23:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   23 |   scanf("%d", &d);
      |   ~~~~~^~~~~~~~~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 17
• Subtask 3: 0 / 23
• Subtask 4: 0 / 9
• Subtask 5: 0 / 31
• Subtask 6: 0 / 9