Submission #846762

#	Time	Username	Problem	Language	Result	Execution time	Memory
846762		Ahmed57	A Difficult(y) Choice (BOI21_books)	C++17	Compilation error	0 ms	0 KiB

books

#include <bits/stdc++.h>
using namespace std;
#include "books.h"
long long val[100001];
long long qu(int i){
    if(val[i]!=-1)return val[i];
    return val[i] = skim(i);
}
void solve(int N,int K,long long A,int S){
    memset(val,-1,sizeof val);
    int l = 1 , r = N-K , ans = -1 , sum = 0;
    while(l<=r){
        int mid = (l+r)/2;
        long long val = 0;
        for(int i = mid;i<mid+K-1;i++){
            val+=qu(i);
        }
        if(val<A){
            l = mid+1;
            sum = val
            ans = mid;
        }else r = mid-1;
    }
    if(ans==-1)impossible();
    l = ans+K-1 , r = N;
    while(l<=r){
        int mid = (l+r)/2;
        if(sum+qu(mid)<A){
            l= mid+1;
        }else if(sum+qu(mid)>2*A){
            r = mid-1;
        }else{
            vector<int> v;
            for(int i = ans;i<ans+K-1;i++)v.push_back(i);
            v.push_back(mid);
            answer(v);
            return ;
        }
    }
    impossible();
}

Compilation message (stderr)

books.cpp: In function 'void solve(int, int, long long int, int)':
books.cpp:20:22: error: expected ';' before 'ans'
   20 |             sum = val
      |                      ^
      |                      ;
   21 |             ans = mid;
      |             ~~~