Submission #352450

#	Time	Username	Problem	Language	Result	Execution time	Memory
352450		David_M	Cave (IOI13_cave)	C++14	0 / 100	313 ms	492 KiB

cave

#include "cave.h"
#include <bits/stdc++.h>
using namespace std;
int c[5003],f[5003],a[5003],i,j,x,l,r,m;
void A(int R){for(;R>=l;R--)c[R]^=!f[R];}
int T(){return tryCombination(c)+8192&8191<=i;}
void exploreCave(int N){
    for(;i<N;i++){
		l=0,r=N-1;
    	if(T())A(r);
    	while(l<r){
    		m=l+r>>1;A(m);
			T()?r=m,A(m):A(m),l=m+1;
		}
		a[l]=i,f[l]=1;
	}answer(c,a);
}

Compilation message (stderr)

cave.cpp: In function 'int T()':
cave.cpp:6:33: warning: suggest parentheses around '+' in operand of '&' [-Wparentheses]
    6 | int T(){return tryCombination(c)+8192&8191<=i;}
      |                ~~~~~~~~~~~~~~~~~^~~~~
cave.cpp: In function 'void exploreCave(int)':
cave.cpp:12:10: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   12 |       m=l+r>>1;A(m);
      |         ~^~

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