Submission #693352

#	Time	Username	Problem	Language	Result	Execution time	Memory
693352		BobCompetitiveProgramming	A Difficult(y) Choice (BOI21_books)	C++14	Compilation error	0 ms	0 KiB

books

#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <iomanip>
#include <cmath>
#include <map>
#include <set>
#include <unordered_set>
#include <cstring>
#include <queue>
#include <array>
using namespace std; using ll=int64_t;
#define rep(i,n) for(ll i=0; i<ll(n); ++i)
#define vi vector<ll>
#define all(x) begin(x), end(x)
#define pi pair<ll, ll>

#include <books.h>

// N books, buy K books, difficulty between A and 2A, skims allowed.
void solve(int N, int K, ll A, int S){ 
    vector<int> buys;

    int left=0, right=N+1;
    while(right-left >=K && S >= 2){
        ll mid=(left+right)/2; 
        if(mid+K > N){
            if(left) --left;
            else break;
            continue;
        }
        double avg_diff = (double(skim(mid)) + double(skim(mid+K)))/2.0;
        S-=2;
        if(A <= avg_diff && avg_diff <= 2*A){
            for(ll i=mid; mid<=mid+K; ++i) buys.push_back(i);
            answer(buys);
        }

        if(avg_diff < A) left=mid;
        else right=mid; 
    }
    impossible();
}

int main(){
    return 0; 
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccrzRS31.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccyDtOI2.o:books.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccrzRS31.o: in function `main':
grader.cpp:(.text.startup+0x83): undefined reference to `solve(int, int, long long, int)'
collect2: error: ld returned 1 exit status