Submission #223142

#	Time	Username	Problem	Language	Result	Execution time	Memory
223142		aggu_01000101	Cave (IOI13_cave)	C++14	0 / 100	48 ms	384 KiB

cave

#include <bits/stdc++.h>
#include "cave.h"
#define mid(l, u) ((l+u)/2)
#define test(a) tryCombination(a);
#define lchild(i) (i*2 + 1)
#define rchild(i) (i*2 + 2)
using namespace std;
void exploreCave(int n){
    int currdoor = 0, l = 0, u = n-1;
    bool change[n];
    for(int i = 0;i<n;i++) change[i] = true;
    int q[n];
    int r;
    int ans[n];
    while(currdoor<n){
        for(int i = 0;i<n;i++){
            if(change[i]) q[i] = 1;
        }//
        r = test(q);
        int req = r==currdoor;
        int l = 0;
        int u = n-1;
        while(l<u){
            int m = mid(l, u);
            for(int i = l;i<=m;i++){
                if(change[i]) q[i] = req;
            }
            for(int i = m+1;i<=u;i++){
                if(change[i]) q[i] = req^1;
            }
            r = test(q);
            if(r==currdoor){
                u = m;
            }
            else{
                l = m+1;
            }
        }
        change[l] = false;
        q[l] = req;
        ans[l] = currdoor;
        currdoor++;
    }
    answer(q, ans);
}

Compilation message (stderr)

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:9:23: warning: unused variable 'l' [-Wunused-variable]
     int currdoor = 0, l = 0, u = n-1;
                       ^
cave.cpp:9:30: warning: unused variable 'u' [-Wunused-variable]
     int currdoor = 0, l = 0, u = n-1;
                              ^

• Subtask 1: 0 / 12
• Subtask 2: 0 / 13
• Subtask 3: 0 / 21
• Subtask 4: 0 / 30
• Subtask 5: 0 / 24