Submission #1054838

#	Time	Username	Problem	Language	Result	Execution time	Memory
1054838		Warinchai	Island Hopping (JOI24_island)	C++17	65 / 100	6 ms	716 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];
int n;
bool check(int p,int ch,int pch){
    //cerr<<"pchild:"<<pch<<"\n";
    for(int i=0;i<n-1;i++){
        if(order[pch].size()<i+1)order[pch].push_back(query(pch,i+1));
        if(order[pch][i]==p)return true;
        else if(child[order[pch][i]])return false;
    }
    return true;
}
void solve(int N, int L) {
    n=N;
    /*for(int i=1;i<=N;i++){
        for(int j=1;j<N;j++){
            int x=query(i,j);
            order[i].push_back(x);
        }
    }*/
    //priority_queue<int,vector<int>,greater<int>>q;
    //q.push(1);
    int cnt=0;
    for(int i=1;i<n;i++){
        if(cnt==n-1)break;
        //cerr<<i<<"\n";
        int ocur=0;
        ocur++;
        if(order[i].size()<ocur)order[i].push_back(query(i,ocur));
        for(int i=1;i<=N;i++)child[i]=0;
        int ch=order[i][0];
        if(order[ch].size()==0)order[ch].push_back(i);
        //cerr<<"child:"<<ch<<"\n";
        child[ch]=1;
        if(!mp[{ch,i}])mp[{ch,i}]++,mp[{i,ch}]++,answer(i,ch),cnt++;
        int cur=1;
        ocur++;
        if(order[i].size()<ocur)order[i].push_back(query(i,ocur));
        while(cur<N-1&&check(i,ch,order[i][cur])){
            ///cerr<<"end\n";
            if(!mp[{order[i][cur],i}])mp[{order[i][cur],i}]++,mp[{i,order[i][cur]}]++,answer(i,order[i][cur]),cnt++;
            if(order[order[i][cur]].size()==0)order[order[i][cur]].push_back(i);
            child[order[i][cur]]=1;
            cur++;
            ocur++;
            if(order[i].size()<ocur&&ocur<N)order[i].push_back(query(i,ocur));
        }
    }
}

Compilation message (stderr)

island.cpp: In function 'bool check(int, int, int)':
island.cpp:11:29: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   11 |         if(order[pch].size()<i+1)order[pch].push_back(query(pch,i+1));
      |            ~~~~~~~~~~~~~~~~~^~~~
island.cpp: In function 'void solve(int, int)':
island.cpp:33:27: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   33 |         if(order[i].size()<ocur)order[i].push_back(query(i,ocur));
      |            ~~~~~~~~~~~~~~~^~~~~
island.cpp:42:27: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   42 |         if(order[i].size()<ocur)order[i].push_back(query(i,ocur));
      |            ~~~~~~~~~~~~~~~^~~~~
island.cpp:50:31: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   50 |             if(order[i].size()<ocur&&ocur<N)order[i].push_back(query(i,ocur));
      |                ~~~~~~~~~~~~~~~^~~~~

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