Submission #1258947

#	Time	Username	Problem	Language	Result	Execution time	Memory
1258947		dattenlamj	Souvenirs (IOI25_souvenirs)	C++20	Compilation error	0 ms	0 KiB

souvenirs

#include<bits/stdc++.h>
#define int long long
std::pair<std::vector<int>, long long> transaction(long long M) ;
void buy_souvenirs(int n, long long P0){
    auto [v,x] = transaction(P0-1);
    int a[n];
    for (int i=0;i<n;i++){
        a[i]=0;
    }
    a[0]=P0;
    if (v.size()==1){
        a[1]=P0-1-x;
        transaction(a[1]-1);
        transaction(a[1]-1);
    }
    else{
        int y=P0-x-1;
        transaction((y/2));
    }
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccE1wn4e.o: in function `main':
stub.cpp:(.text.startup+0x99): undefined reference to `buy_souvenirs(int, long long)'
collect2: error: ld returned 1 exit status