Submission #1124313

#	Time	Username	Problem	Language	Result	Execution time	Memory
1124313		Rainmaker2627	Cave (IOI13_cave)	C++20	Compilation error	0 ms	0 KiB

cave

#include "cave.h"

void setPrefix(int N, int l, int r, int (&s)[], int (&cor)[]) {
	for (int i = 0; i < l; ++i) s[i]=(cor[i]==-1?1-r:cor[i]);
	for (int i = l; i < N; ++i) s[i]=(cor[i]==-1?r:cor[i]);
}

void exploreCave(int N) {
	int s[N], cor[N], ans[N];
	for (int i = 0; i < N; ++i) s[i]=0, cor[i]=ans[i]=-1;

	for (int i = 1; i <= N; ++i) {
		setPrefix(N, 0, 0, s, cor);
		int l=0, r=N, cor[i-1]=(tryCombination(s)==i);
		while (l<r) {
			int mid=(l+r)/2;
			setPrefix(N, mid, cor[i-1], s, cor);
			int t=tryCombination(s);
			if (t==i) l=mid+1;
			else r=mid;
		} ans[i]=r;
	} answer(cor, ans);
}

Compilation message (stderr)

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:14:58: error: array must be initialized with a brace-enclosed initializer
   14 |                 int l=0, r=N, cor[i-1]=(tryCombination(s)==i);
      |                                        ~~~~~~~~~~~~~~~~~~^~~~