Submission #336111

#	Time	Username	Problem	Language	Result	Execution time	Memory
336111		knightron0	Rice Hub (IOI11_ricehub)	C++14	Compilation error	0 ms	0 KiB

ricehub

#include <bits/stdc++.h>
#include "ricehub.h"
#define pb push_back
#define int long long

using namespace std;
const int MOD = 1e9 + 7;
const int MAXN = 1e5 + 5;


int a[MAXN], pref[MAXN];
int n;


bool check(long long x, long long b){
	for(long long i= 1;i<=n-x+1;i++){
		vector<long long> md;
		if(x & 1){
			md.pb((i + i +x-1)/2);
		} else {
			md.pb((i + i +x-1)/2);
			md.pb(((i + i +x-1)/2)+1);
		}
		for(long long m: md){
			long long sum1 = (long long)pref[m]-(long long)pref[i-1];
			sum1 *= -1;
			sum1 += (long long)(m-(i-1))*(long long)a[m];
			long long sum2 = (long long)pref[i+x-1]-(long long)pref[m];
			sum2 -= (long long)(i+x-1-m)*(long long)a[m];
			long long sum = sum1+sum2;
			if(sum <= b){
				return true;
			}
		}
	}
	return false;
}


int besthub(int r, int l, int x[], long long b) {
	n = r;
	pref[0] = 0;
	for(int i= 1;i<=n;i++){
		a[i] = x[i-1];
		pref[i] = pref[i-1] + a[i];
	}
	int lo = 1;
    int hi = n;
    while(lo <= hi){
    	int mid = lo+(hi-lo)/2;
    	if(check((long long) mid, b)){
    		lo = mid+1;
    	} else {
    		hi = mid-1;
    	}
    }
    if(!check(lo, b)){
    	return hi;
    }
    return lo;

}


// signed main() {
//     ios_base::sync_with_stdio(false);
//     cin.tie(NULL);
//     #ifndef ONLINE_JUDGE
//     freopen("input.txt", "r", stdin);
//     #endif
//     int m, k;
//     cin>>n>>m>>k;
//   	pref[0] = 0;
//     for(int i=1;i<=n;i++){
//     	cin>>a[i];
//     	pref[i] = pref[i-1] + a[i];
//     }
    
//     return 0;
// }

Compilation message (stderr)

/tmp/cc5QDXcT.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