Submission #500927

#	Time	Username	Problem	Language	Result	Execution time	Memory
500927		Khizri	Split the Attractions (IOI19_split)	C++17	0 / 100	57 ms	12372 KiB

split

#include "split.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define F first
#define S second
#define INF 1e18
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define pii pair<int,int>
#define pll pair<ll,ll>
#define OK cout<<"Ok"<<endl;
const int mxn=2e5+5;
int d[mxn],color[mxn],x,q;
vector<int>vt[mxn];
void dfs(int u,int p,int k){
    if(k==0){
        x=u;
        return;
    }
    color[u]=q;
    for(int v:vt[u]){
        if(v!=p&&!color[v]){
            dfs(v,u,k-1);
        }
    }
}
vector<int> task1(int n,int a,int b,int c){
    for(int i=1;i<=n;i++){
        if(d[i]==1){
            q=1;
            dfs(i,-1,a);
            break;
        }
    }
    q=2;
    dfs(x,-1,b);
    vector<int>ans;
    for(int i=1;i<=n;i++){
        if(color[i]==1){
            ans.pb(1);
        }
        else if(color[i]==2){
            ans.pb(2);
        }
        else{
            ans.pb(3);
        }
    }
    return ans;
}
vector<int> find_split(int n,int a,int b,int c,vector<int>p,vector<int>q) {
	int m=p.size();
	for(int i=0;i<p.size();i++){
        d[p[i]+1]++,d[q[i]+1]++;
        vt[p[i]+1].pb(q[i]+1);
        vt[q[i]+1].pb(p[i]+1);
	}
	if(m==n-1){
        return task1(n,a,b,c);
	}


}

Compilation message (stderr)

split.cpp: In function 'std::vector<int> find_split(int, int, int, int, std::vector<int>, std::vector<int>)':
split.cpp:55:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |  for(int i=0;i<p.size();i++){
      |              ~^~~~~~~~~
split.cpp:65:1: warning: control reaches end of non-void function [-Wreturn-type]
   65 | }
      | ^

• Subtask 1: 0 / 7
• Subtask 2: 0 / 11
• Subtask 3: 0 / 22
• Subtask 4: 0 / 24
• Subtask 5: 0 / 36