Submission #232678

#	Time	Username	Problem	Language	Result	Execution time	Memory
232678		crossing0ver	Saveit (IOI10_saveit)	C++17	Compilation error	0 ms	0 KiB

encoder

#include<bits/stdc++.h>
#include "grader.h"
#include "encoder.h"
using namespace std;
vector<int> adj[1005];
bool vis[1005];
int dis[1005];
void binary (int n) {
	for (int i = 0; i < 10; i++) 
		if ((1 << i) & n) encode_bit(1);
		else encode_bit(0);
}
bool COOL[1001][1001];
void encode(int nv, int nh, int ne, int *v1, int *v2){
  for (int i = 0; i < ne; i++) {
  	adj[v1[i]].push_back(v2[i]);
  	adj[v2[i]].push_back(v1[i]);
  }
  for (int  s = 0; s < nh; s++) {
  	queue<int> q;
  	q.push(s);
  	vis[s] = 1;
  	while (!q.empty()) {
		  int v = q.front();
		  q.pop();
		  for (auto i : adj[v]) {
		  	if (!vis[i]) {
		  		vis[i] = 1;
		  		dis[i] = dis[v] + 1; 
		  		q.push(i);
		  		COOL[i][v] = COOL[v][i] = 1;
			  }
		  }
	  }
	 memset(vis,0,sizeof vis);
	  memset(dis,0,sizeof dis);
}
	  int ans = 0;
	  vector<pair<int,int> > v;
	  for (int i = 0; i < n; i++)
	  for (int j = i; j < n; j++)
	  	if (COOL[i][j]) {
	  		ans++;
	  		v.push_back({i,j});
	  	}
	sort(v.begin(),v.end());
	int cur = 0;
	for (auto i : v) {
		while (cur != i.first) {
			binary(1023);
			cur++;
		}
		binary(i.second);
	}
	binary(1022);
}

decoder

#include<bits/stdc++.h>
#include "grader.h"
#include "decoder.h"
using namespace std;  
vector<int> adj[1005];
void decode(int nv, int nh) {
	int e = 0,cur = 0;
	while (true) {
		int s = 0;
		for (int i = 0; i < 10; i++)
			if (decode_bit())
				x |= (1 << i);
		if (s == 1022) break;
		if (s == 1023) cur++;
		adj[cur].push_back(s);
		adj[s].push_back(cur);
	}
	
	for (int  s = 0; s < nh; s++) {
		hops(s,s,0);
  	queue<int> q;
  	q.push(s);
  	vis[s] = 1;
  	while (!q.empty()) {
		  int v = q.front();
		  q.pop();
		  for (auto i : adj[v]) {
		  	if (!vis[i]) {
		  		hops(s,i,dis[v] + 1);
		  		vis[i] = 1;
		  		dis[i] = dis[v] + 1; 
		  		q.push(i);
			  }
		  }
	  }
}

}

Compilation message (stderr)

encoder.cpp: In function 'void encode(int, int, int, int*, int*)':
encoder.cpp:40:24: error: 'n' was not declared in this scope
    for (int i = 0; i < n; i++)
                        ^

decoder.cpp: In function 'void decode(int, int)':
decoder.cpp:12:5: error: 'x' was not declared in this scope
     x |= (1 << i);
     ^
decoder.cpp:23:4: error: 'vis' was not declared in this scope
    vis[s] = 1;
    ^~~
decoder.cpp:29:16: error: 'dis' was not declared in this scope
       hops(s,i,dis[v] + 1);
                ^~~
decoder.cpp:29:16: note: suggested alternative: 'div'
       hops(s,i,dis[v] + 1);
                ^~~
                div
decoder.cpp:7:6: warning: unused variable 'e' [-Wunused-variable]
  int e = 0,cur = 0;
      ^