Submission #1028541

#	Time	Username	Problem	Language	Result	Execution time	Memory
1028541		vjudge1	Koala Game (APIO17_koala)	C++17	19 / 100	79 ms	452 KiB

koala

#include "koala.h"
#include<bits/stdc++.h>
using namespace std;
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];
    playRound(me,you);
    int L=1,R=7;
    while(L<R){
        int mid=L+R>>1;
        me[0]=mid;
        me[1]=mid;
        playRound(me,you);
        if(you[0]-me[0])
            return !you[0];
        if(you[0])
            L=mid+1;
        else R=mid-1;
    }
}

void allValues(int N, int W, int *P) {
    
    set<int>V;
    for(int i=0;i<N;i++)V.insert(i);
    for(int i=N;i;i--){
        int k=maxValue2(V,W);
        P[k]=i;
        V.erase(k);
    }
}

Compilation message (stderr)

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:59:1: warning: control reaches end of non-void function [-Wreturn-type]
   59 | }
      | ^

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