Submission #509808

#	Time	Username	Problem	Language	Result	Execution time	Memory
509808		leinad2	Chameleon's Love (JOI20_chameleon)	C++17	4 / 100	19 ms	336 KiB

chameleon

#include "chameleon.h"
#include<bits/stdc++.h>
using namespace std;
void Solve(int N)
{
    vector<int>v;
    for(int i=1;i<=2*N;i++)
    {
        if(v.size()==0)v.push_back(i);
        else
        {
            int a=0, b=v.size();
            while(a<b)
            {
                int m=a+b>>1;
                vector<int>Q;
                for(int j=0;j<=m;j++)Q.push_back(v[j]);
                Q.push_back(i);
                if(Query(Q)==m+1)b=m;
                else a=m+1;
            }
            if(a==v.size())
            {
                v.push_back(i);
                continue;
            }
            vector<int>V;
            for(int j=0;j<a;j++)V.push_back(v[j]);
            for(int j=a+1;j<v.size();j++)V.push_back(v[j]);
            Answer(v[a], i);
            v=V;
        }
    }
}

Compilation message (stderr)

chameleon.cpp: In function 'void Solve(int)':
chameleon.cpp:15:24: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   15 |                 int m=a+b>>1;
      |                       ~^~
chameleon.cpp:22:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |             if(a==v.size())
      |                ~^~~~~~~~~~
chameleon.cpp:29:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |             for(int j=a+1;j<v.size();j++)V.push_back(v[j]);
      |                           ~^~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 36