Submission #1250120

#	Time	Username	Problem	Language	Result	Execution time	Memory
1250120		kaloyan	Souvenirs (IOI25_souvenirs)	C++20	Compilation error	0 ms	0 KiB

souvenirs

#include <bits/stdc++.h>

using namespace std;

const long long MAXN = 100 + 1;

long long counter[MAXN], values[MAXN];

std::pair<std::vector<int>, long long> transaction(long long M);

void buy_souvenirs(int N, long long P0){
    
    if(N == 2) 
    {
        transaction(P0 - 1);
    }
    else if(N == 3)
    {
        
        pair<vector<int>, long long> p = transaction(P0 - 1);
        
        if(p.first.size() == 1)
        {
            long long first_val = (P0 - 1) - p.second;
            transaction(first_val - 1);
            transaction(first_val - 1);
        }
        else
        {
            long long total_sum = (P0 - 1) - p.second;
            transaction(total_sum / 2);
        }
    
    
    }
    else
    {
        
        long long prev = P0;
        values[0] = P0;
        
        for(int i = 1 ; i < N ; ++i)
        {
            
            pair<vector<int>, long long> p = transaction(prev - 1);
            
            for(int idx : p.first)
            {
                counter[idx]++;
            }
            
            if(p.first.size() == 1)
            {
                prev -= 1;
            }
            else
            {
                prev -= 2;
            }
            
            values[i] = prev;
            
        }
        
        
        for(int i = 1 ; i < N ; ++i)
        {
            
            while(counter[i] < i)
            {
                
                pair<vector<int>, long long> p = transaction(values[i]);
                counter[idx]++;
            }
        }
    
    
        
    }

}

Compilation message (stderr)

souvenirs.cpp: In function 'void buy_souvenirs(int, long long int)':
souvenirs.cpp:73:25: error: 'idx' was not declared in this scope
   73 |                 counter[idx]++;
      |                         ^~~