Submission #724739

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
724739	2023-04-15T20:21:18 Z	Bogdan1110	Rice Hub (IOI11_ricehub)	C++14	Compilation error	0 ms	0 KB

ricehub

#include <bits/stdc++.h>
#define FAST {ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);}
#define FILES {freopen("input.txt", "r", stdin);freopen("output.txt", "w", stdout);}
#define ll long long
#define ull unsigned long long
#define pqueue priority_queue
#define pb push_back
#define fi first
#define se second
#define ld long double
#define pii pair<int,int>
#define pll pair<long long,long long>
#define all(a) (a).begin(), (a).end()
#define mp make_pair 
using namespace std;
// order_of_key -> # less than k
// find_by_order -> k-th element
// pq max element
 
void files() {
    #ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif
}

const double eps = 0.00000001;
const int NMAX = 100010;
const ll inf = LLONG_MAX/3;
const ll modi = 998244353;

ll s1[NMAX], s2[NMAX], X[NMAX];

#define SUM(l,r) (s1[r]-(l?s1[l-1]:0))

ll calc(int l, int r) {
    int mid = (l+r)/2;
    ll res = (mid-l+1)*(X[mid]) - SUM(l,mid);
    res += SUM(mid,r) - (r-mid+1)*(X[mid]);
    return res;
}

ll besthub(ll n, ll L, ll  x[], ll b) {

    for (int i = 0 ; i < n ; i++) {
        s1[i] = x[i];
        X[i] = x[i];
        if ( i )
            s1[i] += s1[i-1];
    }
    ll res = 1;
    ll l = 0;
    ll r = 1;
    while(r<n) {
        //cout << l << ' ' << r << endl;
        ll temp = calc(l,r);
        if (temp <= b) {
            r++;
            res = max(res, r-l);
        }
        else {
            l++;
        }
    }
    return res;
}

Compilation message

ricehub.cpp: In function 'void files()':
ricehub.cpp:22:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |         freopen("input.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
ricehub.cpp:23:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |         freopen("output.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/cctpUDiC.o: in function `main':
grader.cpp:(.text.startup+0xae): undefined reference to `besthub(int, int, int*, long long)'
collect2: error: ld returned 1 exit status