Submission #559571

#	Time	Username	Problem	Language	Result	Execution time	Memory
559571		neki	Handcrafted Gift (IOI20_gift)	C++14	Compilation error	0 ms	0 KiB

gift

#include <bits/stdc++.h>
#include "gift.h"
#define ll long long
#define vc vector
using namespace std;


int construct(int n, int r, int a[], int b[], int x[]){
    
    vc<vc<vc<int>>> ques(3, vc<vc<int>> (n));
    for(int i=0;i<r;++i) ques[x[i]][b[i]].push_back(a[i]);
    
    vc<pair<int, int>> ints;
    for(int i=0;i<n;++i){
        ints.emplace_back(i, i);
        
        for(auto q: ques[1][i]){
            while(ints.size() and q<ints.back().first) ints.pop_back();
            if(ints.size()) ints.emplace_back(ints.back().second+1, i);
            else ints.emplace_back(0, i);
        }
    }
    
    int br=1, j=0;
    for(int i=0;i<n;++i){
        while(ints[j].second<i)++j;
        for(auto q: ques[2][i]) if(ints[j].first<=q) br=0;
    }
    
    if(br){
        string ans="";
        char cur='R';
        for(auto i:ints){
            for(int j=i.first;j<=i.second;++j) ans+=cur;
            
            if(cur=='R') cur='B';
            else cur='R';
        }
        craft(ans);
        return 1;
    }
    else return 0;
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccdwI9Kr.o: in function `main':
grader.cpp:(.text.startup+0x267): undefined reference to `construct(int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status