제출 #1030265

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1030265		vjudge1	코알라 (APIO17_koala)	C++17	59 / 100	51 ms	708 KiB

koala

#include "koala.h"
#include<bits/stdc++.h>
using namespace std;
mt19937 rng(243987);
int minValue(int N, int W) {
    int me[100]{1},you[100];
    playRound(me,you);
    for(int i=0;i<N;i++)
        if(you[i]==0)
            return i;
    return 0;
}

int maxValue(int N, int W) {
    int me[100],you[100];
    vector<int>theposs(N);
    iota(theposs.begin(),theposs.end(),0);
    while(theposs.size()>1){
        memset(me,0,sizeof me);
        for(auto i:theposs)
            me[i]=W/theposs.size();
        playRound(me,you);
        vector<int>theposs2;
        for(auto i:theposs)
            if(you[i])theposs2.push_back(i);
        theposs=theposs2;
    }
    return theposs[0];
}
int maxValue2(set<int>theposs, int W) {
    int me[100],you[100], ORIG=theposs.size();
    while(theposs.size()>1){
        memset(me,0,sizeof me);
        for(auto i:theposs)
            me[i]=(W+theposs.size()-ORIG)/theposs.size();
        playRound(me,you);
        set<int>theposs2;
        for(auto i:theposs)
            if(you[i])theposs2.insert(i);
        theposs=theposs2;
    }
    return *theposs.begin();
}

int greaterValue(int N, int W) {
    int me[100]{1,1},you[100];
    int L=2,R=min(W/2,8);
    while(L<=R){
        int mid=L+R>>1;
        me[0]=mid;
        me[1]=mid;
        playRound(me,you);
        if(you[0]-you[1])
            return !you[0];
        if(you[0])
            L=mid+1;
        else R=mid-1;
    }
}int greaterValue2(int A,int B) {
    int me[100]{},you[100];
    int L=2,R=8;
    while(L<=R){
        int mid=L+R>>1;
        me[A]=mid;
        me[B]=mid;
        playRound(me,you);
        if(you[A]-you[B])
            return !you[A];
        if(you[A])
            L=mid+1;
        else R=mid-1;
    }
    me[A]=1,me[B]=1;
    playRound(me,you);
    return !you[A];
}
void allValues(int N, int W, int *P) {
    vector<int>v(N);
    iota(v.begin(),v.end(),0);
    stable_sort(v.begin(),v.end(),[](int a,int b){
        return !greaterValue2(a,b);
    });
    for(int i=0;i<N;i++)
        P[v[i]]=N-i;
}

컴파일 시 표준 에러 (stderr) 메시지

koala.cpp: In function 'int greaterValue(int, int)':
koala.cpp:49:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   49 |         int mid=L+R>>1;
      |                 ~^~
koala.cpp: In function 'int greaterValue2(int, int)':
koala.cpp:63:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   63 |         int mid=L+R>>1;
      |                 ~^~
koala.cpp: In function 'int greaterValue(int, int)':
koala.cpp:59:1: warning: control reaches end of non-void function [-Wreturn-type]
   59 | }int greaterValue2(int A,int B) {
      | ^

• Subtask 1: 4 / 4
• Subtask 2: 15 / 15
• Subtask 3: 14 / 18
• Subtask 4: 0 / 10
• Subtask 5: 26 / 53