Submission #599688

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
599688	2022-07-19T18:54:38 Z	stevancv	Secret (JOI14_secret)	C++14	Compilation error	0 ms	0 KB

secret

#include <bits/stdc++.h>
#include "secret.h"
#define ll long long
#define ld long double
#define sp ' '
#define en '\n'
#define smin(a, b) a = min(a, b)
#define smax(a, b) a = max(a, b)
using namespace std;
const int N = 3e3 + 2;
struct block {
    int m;
    vector<int> a, b;
};
int a[N];
vector<block> all;
void Init(int n, vector<int> A) {
    for (int i = 0; i < n; i++) a[i] = A[i];
    function<void(int, int)> DQ = [&] (int l, int r) {
        if (l >= r) return;
        block tr;
        int mid = l + r >> 1;
        tr.m = mid;
        tr.a.push_back(a[mid]);
        for (int i = mid - 1; i >= l; i--) {
            tr.a.push_back(Secret(a[i], tr.a.back()));
        }
        tr.b.push_back(a[mid + 1]);
        for (int i = mid + 2; i <= r; i++) {
            tr.b.push_back(Secret(tr.b.back(), a[i]));
        }
        cout << mid << en;
        for (int u : tr.a) cout << u << sp;
        cout << en;
        for (int u : tr.b) cout << u << sp;
        cout << en;
        all.push_back(tr);
        DQ(l, mid - 1);
        DQ(mid + 2, r);
    };
    DQ(0, n - 1);
}
int Query(int l, int r) {
    if (l == r) return a[l];
    for (auto xyz : all) {
        int m = xyz.m;
        vector<int> a = xyz.a;
        vector<int> b = xyz.b;
        if (l <= m && m <= r) {
            int x = 0; if (m - l < a.size()) x = a[m - l];
            int y = 0; if (r - m - 1 < b.size()) y = b[r - m - 1];
            return Secret(x, y);
        }
    }
}

Compilation message

secret.cpp: In lambda function:
secret.cpp:22:21: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   22 |         int mid = l + r >> 1;
      |                   ~~^~~
secret.cpp: In function 'int Query(int, int)':
secret.cpp:50:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   50 |             int x = 0; if (m - l < a.size()) x = a[m - l];
      |                            ~~~~~~^~~~~~~~~~
secret.cpp:51:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |             int y = 0; if (r - m - 1 < b.size()) y = b[r - m - 1];
      |                            ~~~~~~~~~~^~~~~~~~~~
secret.cpp:55:1: warning: control reaches end of non-void function [-Wreturn-type]
   55 | }
      | ^
/usr/bin/ld: /tmp/cczlJarZ.o: in function `main':
grader-full.cpp:(.text.startup+0x2a8): undefined reference to `Init(int, int*)'
collect2: error: ld returned 1 exit status