제출 #898691

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
898691		abcvuitunggio	버섯 세기 (IOI20_mushrooms)	C++17	0 / 100	1 ms	448 KiB

mushrooms

#include "mushrooms.h"
#include <bits/stdc++.h>
using namespace std;
const int k=100;
vector <int> a,b;
int t,res,sz;
int count_mushrooms(int n){
	if (n<=227){
        for (int i=1;i<n;i++)
            res+=1-use_machine({0,i});
        return res+1;
	}
	a.push_back(0);
	for (int i=1;i<=k*2;i++){
        if (max(a.size(),b.size())==k)
            break;
        int x=use_machine({0,i});
        if (x)
            b.push_back(i);
        else
            a.push_back(i);
	}
	sz=a.size();
	t=(a.size()!=k);
	if (a.size()!=k)
        swap(a,b);
	for (int i=a.size()+b.size();i<n;i+=k*2){
        if (i==n-1){
            res+=abs(t-use_machine({0,i}));
            continue;
        }
        vector <int> ve;
        for (int j=i;j<min(i+k+1,n);j++){
            ve.push_back(j);
            if (j-i<a.size())
                ve.push_back(a[j-i]);
        }
        int x=use_machine(ve);
        if (i==n-2){
            res+=x;
            continue;
        }
        int l=ve[0],r=ve.back();
        ve.clear();
        ve.push_back(l);
        for (int j=min(i+k+1,n);j<min(i+k*2,n);j++){
            ve.push_back(a[j-i-k-1]);
            ve.push_back(j);
        }
        ve.push_back(min(i+k*2,n)-min(i+k+1,n));
        ve.push_back(r);
        x+=use_machine(ve);
        res+=x/2;
	}
	return (t?res:n-a.size()-b.size()-res)+sz;
}

컴파일 시 표준 에러 (stderr) 메시지

mushrooms.cpp: In function 'int count_mushrooms(int)':
mushrooms.cpp:35:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |             if (j-i<a.size())
      |                 ~~~^~~~~~~~~

• Subtask 1: 0 / 100