제출 #777484

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
777484		alexander707070	드문 곤충 (IOI22_insects)	C++17	컴파일 에러	0 ms	0 KiB

insects

#include<bits/stdc++.h>
#include "insects.h"
#define MAXN 2007
using namespace std;

int n,last,cnt,ans;
vector<int> diff,same;
int type[MAXN];
bool used[MAXN];

int solve_small(){
    for(int i=1;i<n;i++){
        diff.clear();

        for(int i=0;i<n;i++){
            if(used[i])continue;

            move_inside(i);
            diff.push_back(i);

            if(press_button()>1){
                move_outside(i);
                diff.pop_back();
            }
        }

        if(last!=diff.size()){
            return i;
        }

        for(int i:diff){
            used[i]=true;
            move_outside(i);
        }
    }

    return n;
}

void solve_big(){

    cnt=ans=n;
    while(cnt>0){

        same.clear();
        for(int i=0;i<n;i++){
            if(used[i])continue;

            move_inside(i);
            same.push_back(i);
            if(press_button()!=same.size()){
                same.pop_back();
                move_outside(i);
            }
        }

        ans=min(ans,int(same.size()));

        for(int i:same){
            used[i]=true;
            move_outside(i);
        }
    }

    return ans;
}

int min_cardinality(int N){
    n=N;
    last=-1;

    for(int i=0;i<n;i++){
        move_inside(i);
        diff.push_back(i);

        if(press_button()>1){
            move_outside(i);
            diff.pop_back();
        }
    }

    if(diff.size()>=sqrt(n)+1){
        last=diff.size();
        for(int i:diff){
            used[i]=true;
            move_outside(i);
        }
        return solve_small();
    }else{
        return solve_big();
    }

    return n;
}

컴파일 시 표준 에러 (stderr) 메시지

insects.cpp: In function 'int solve_small()':
insects.cpp:27:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |         if(last!=diff.size()){
      |            ~~~~^~~~~~~~~~~~~
insects.cpp: In function 'void solve_big()':
insects.cpp:51:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |             if(press_button()!=same.size()){
      |                ~~~~~~~~~~~~~~^~~~~~~~~~~~~
insects.cpp:65:12: error: return-statement with a value, in function returning 'void' [-fpermissive]
   65 |     return ans;
      |            ^~~
insects.cpp: In function 'int min_cardinality(int)':
insects.cpp:90:25: error: void value not ignored as it ought to be
   90 |         return solve_big();
      |                ~~~~~~~~~^~