Submission #1054841

#	Time	Username	Problem	Language	Result	Execution time	Memory
1054841		Warinchai	Island Hopping (JOI24_island)	C++17	26 / 100	6 ms	700 KiB

island

#include "island.h"
#include<bits/stdc++.h>
using namespace std;
vector<int>order[305];
map<pair<int,int>,int>mp;
int child[305];
bool check(int p,int ch,int pch){
    //cerr<<"pchild:"<<pch<<"\n";
    for(int i=0;i<order[pch].size();i++){
        if(order[pch][i]==p)return true;
        else if(child[order[pch][i]])return false;
    }
    return true;
}
void solve(int N, int L) {
    for(int i=1;i<=N;i++){
        for(int j=1;j<=2;j++){
            int x=query(i,j);
            order[i].push_back(x);
        }
    }
    for(int i=1;i<=N;i++){
        //cerr<<i<<"\n";
        for(int i=1;i<=N;i++)child[i]=0;
        int ch=order[i][0];
        //cerr<<"child:"<<ch<<"\n";
        child[ch]=1;
        if(!mp[{ch,i}])mp[{ch,i}]++,mp[{i,ch}]++,answer(i,ch);
        int cur=1;
        if(cur<N-1&&check(i,ch,order[i][cur])){
            if(!mp[{order[i][cur],i}])mp[{order[i][cur],i}]++,mp[{i,order[i][cur]}]++,answer(i,order[i][cur]);
            child[order[i][cur]]=1;
            cur++;
        }
    }
}

Compilation message (stderr)

island.cpp: In function 'bool check(int, int, int)':
island.cpp:9:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    9 |     for(int i=0;i<order[pch].size();i++){
      |                 ~^~~~~~~~~~~~~~~~~~

• Subtask 1: 2 / 2
• Subtask 2: 4 / 4
• Subtask 3: 7 / 7
• Subtask 4: 0 / 9
• Subtask 5: 13 / 13
• Subtask 6: 0 / 15
• Subtask 7: 0 / 22
• Subtask 8: 0 / 28