Submission #52123

#	Time	Username	Problem	Language	Result	Execution time	Memory
52123		rondojim	Cave (IOI13_cave)	C++17	Compilation error	0 ms	0 KiB

cave

#include <bits/stdc++.h>
#include "cave.h"
using namespace std;

const int MAXN = 5e3 + 5;

int st[MAXN], con[MAXN], cnt;

int tryCombination(int S[]);
void answer(int S[], int D[]);

void solve(int ret){
	int lo = 1, hi = N, mid, res, r;
	while(lo <= hi){
		mid = (lo + hi)>>1;
		for(int i=1; i<=mid; ++i) st[i] ^= 1;
		r = tryCombination(st);
		for(int i=1; i<=mid; ++i) st[i] ^= 1;
		if(r != ret) hi = mid - 1, res = mid;
		else lo = mid + 1;
	}
	st[res] ^= 1;
}

void exploreCave(int N){
	while(true){
		int ret = tryCombination(st);
		if(ret == -1){
			for(int i=1; i<=N; ++i){ st[i] ^= 1; con[i] = tryCombination(st); st[i] ^= 1; }
			break;
		}
		solve(ret);
	}
}

Compilation message (stderr)

cave.cpp: In function 'void solve(int)':
cave.cpp:13:19: error: 'N' was not declared in this scope
  int lo = 1, hi = N, mid, res, r;
                   ^
cave.cpp:15:3: error: 'mid' was not declared in this scope
   mid = (lo + hi)>>1;
   ^~~
cave.cpp:17:3: error: 'r' was not declared in this scope
   r = tryCombination(st);
   ^
cave.cpp:19:30: error: 'res' was not declared in this scope
   if(r != ret) hi = mid - 1, res = mid;
                              ^~~
cave.cpp:19:30: note: suggested alternative: 'ret'
   if(r != ret) hi = mid - 1, res = mid;
                              ^~~
                              ret
cave.cpp:22:5: error: 'res' was not declared in this scope
  st[res] ^= 1;
     ^~~
cave.cpp:22:5: note: suggested alternative: 'ret'
  st[res] ^= 1;
     ^~~
     ret