Submission #268152

#	Time	Username	Problem	Language	Result	Execution time	Memory
268152		wdjpng	Split the Attractions (IOI19_split)	C++17	Compilation error	0 ms	0 KiB

split

#include <bits/stdc++.h>

#define int long long
#define rep(i,n) for(int i = 0; i < n; i++)
#define all(a) a.begin(), a.end()
using namespace std;

const int maxn=200000;
int out[maxn];
bool vis[maxn];
int c=0;
vector<int>val(3);
vector<int>s;
vector<vector<int>>E;

void dfs(int i){
    if(vis[i]){return;}
    vis[i]=true;
    c++;
    if(c<=s[0]){
        out[i]=val[0];
    } else if(c<=s[0]+s[1]){
        out[i]=val[1];
    } else{
        out[i]=val[2];
    }

    for(int w : E[i]){
        dfs(i);
    }
}
vector<int> find_split(int n, int a, int b, int c, vector<int>p, vector<int>q){
    vector<int>s1={a,b,c};
    s=s1;
    sort(all(s));

    rep(i, p.size()){
        E[p[i]].push_back(q[i]);
        E[q[i]].push_back(p[i]);
    }
    
    rep(i, 3){
        rep(j, 3){
            if(s1[i]==s[j]){
                val[j]=i+1;
            }
        }
    }

    dfs(0);
    rep(i, n){
        cout << out[i] <<" ";
    }
}

Compilation message (stderr)

split.cpp: In function 'void dfs(long long int)':
split.cpp:28:13: warning: unused variable 'w' [-Wunused-variable]
   28 |     for(int w : E[i]){
      |             ^
split.cpp: In function 'std::vector<long long int> find_split(long long int, long long int, long long int, long long int, std::vector<long long int>, std::vector<long long int>)':
split.cpp:4:35: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    4 | #define rep(i,n) for(int i = 0; i < n; i++)
......
   37 |     rep(i, p.size()){
      |         ~~~~~~~~~~~                
split.cpp:37:5: note: in expansion of macro 'rep'
   37 |     rep(i, p.size()){
      |     ^~~
split.cpp:54:1: warning: no return statement in function returning non-void [-Wreturn-type]
   54 | }
      | ^
/tmp/cc73zQby.o: In function `main':
grader.cpp:(.text.startup+0x27d): undefined reference to `find_split(int, int, int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status