Submission #355206

#	Time	Username	Problem	Language	Result	Execution time	Memory
355206		NachoLibre	Cave (IOI13_cave)	C++17	100 / 100	288 ms	876 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)+9999)%9999<=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)):(l=m+1,A(m));
		a[l]=i,f[l]=1;
	}answer(c,a);
}

Compilation message (stderr)

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:11:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   11 |      while(l<r)m=l+r>>1,A(m),T()?(r=m,A(m)):(l=m+1,A(m));
      |                  ~^~

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