Submission #552489

#	Time	Username	Problem	Language	Result	Execution time	Memory
552489		Sharky	Rice Hub (IOI11_ricehub)	C++17	Compilation error	0 ms	0 KiB

ricehub

#include "ricehub.h"
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define N 100005
vector<int> ps(N, 0);
bool ok(int L, int R, int x) {
    int mid = (L + R) >> 1; // median
    // brute force
    int cost = v[mid] * (mid - L + 1) - (ps[mid] - ps[L - 1]);
    // cout << L << " " << R << " " << mid << " " << cost;
    cost += (ps[R] - ps[mid]) - v[mid] * (R - mid);
    // cout << " " << cost << "\n";
    return (cost <= b);

}
bool check(int x) {
    // x consecutive hubs
    for (int i = 1; i <= r - x + 1; i++) {
        if (ok(i, i + x - 1, x)) return true;
    }
    return false; 
}
int besthub(int r, int l, int v[], long long b) {
    int lo = 1, hi = r, ans; 
    while (lo <= hi) {
        int m = (lo + hi) >> 1;
        // cout << m << " " << check(m) << "\n";
        if (check(m)) lo = m + 1, ans = m;
        else hi = m - 1; 
    }
    return ans;
}

Compilation message (stderr)

ricehub.cpp: In function 'bool ok(long long int, long long int, long long int)':
ricehub.cpp:10:16: error: 'v' was not declared in this scope
   10 |     int cost = v[mid] * (mid - L + 1) - (ps[mid] - ps[L - 1]);
      |                ^
ricehub.cpp:14:21: error: 'b' was not declared in this scope
   14 |     return (cost <= b);
      |                     ^
ricehub.cpp: In function 'bool check(long long int)':
ricehub.cpp:19:26: error: 'r' was not declared in this scope
   19 |     for (int i = 1; i <= r - x + 1; i++) {
      |                          ^