Submission #354334

#	Time	Username	Problem	Language	Result	Execution time	Memory
354334		David_M	Cave (IOI13_cave)	C++14	100 / 100	281 ms	680 KiB

cave

#include "cave.h"
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);if(T())r=m,A(m);else l=m+1;}a[l]=i,f[l]=1;}answer(c,a);}

Compilation message (stderr)

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:2:204: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
    2 | 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);if(T())r=m,A(m);else l=m+1;}a[l]=i,f[l]=1;}answer(c,a);}
      |                                                                                                                                                                                                           ~^~

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