Submission #566761

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
566761	2022-05-22T19:58:36 Z	birthdaycake	Saveit (IOI10_saveit)	C++17	Compilation error	0 ms	0 KB

encoder

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


 
void encode(int n, int h, int p, int a[], int b[]){
    
    vector<int>adj[1001];
     
     
    int dis[1001],par[1001];
    for(int i = 0; i < n; i++) {
        dis[i] = INT_MAX;
    }
    for(int i = 0; i < p; i++){
        adj[a[i]].push_back(b[i]);
        adj[b[i]].push_back(a[i]);
    }
    dis[0] = par[0] = 0;
    vector<int>d = {0};
    int j = 0;
    while(j < d.size()){
        for(auto s: adj[d[j]]){
            if(dis[s] == INT_MAX){
                dis[s] = dis[d[j]] + 1;
                par[s] = d[j];
                d.push_back(s);
            }
        }
        j++;
    }
    
    for(int i = 1; i < n; i++){
        for(int k = 0; k < 10; k++){
            if(par[i] & (1 << k)) encode_bit(1);
            else encode_bit(0);
        }
    }
    for(int i = 1; i < h; i++){
        vector<int>pc(n, INT_MAX);
        pc[i] = 0;
        int j = 0;
        vector<int>b = {i};
        while(j < b.size()){
            for(auto s:adj[b[j]]){
                if(pc[s] == INT_MAX){
                    pc[s] = pc[b[j]] + 1;
                    b.push_back(s);
                }
            }
            j++;
        }
        for(int k = 1; k < n; k++){
            int diff = pc[k] - pc[par[k]];
            if(diff != 0){
                encode_bit(1);
                if(diff < 0) encode_bit(1);
                else encode_bit(0);
            }else{
                encode_bit(0);
            }
        }
    }
    
    
}

decoder

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


 
void encode(int n, int h, int p, int a[], int b[]){
    
    vector<int>adj[1001];
     
     
    int dis[1001],par[1001];
    for(int i = 0; i < n; i++) {
        dis[i] = INT_MAX;
    }
    for(int i = 0; i < p; i++){
        adj[a[i]].push_back(b[i]);
        adj[b[i]].push_back(a[i]);
    }
    dis[0] = par[0] = 0;
    vector<int>d = {0};
    int j = 0;
    while(j < d.size()){
        for(auto s: adj[d[j]]){
            if(dis[s] == INT_MAX){
                dis[s] = dis[d[j]] + 1;
                par[s] = d[j];
                d.push_back(s);
            }
        }
        j++;
    }
    
    for(int i = 1; i < n; i++){
        for(int k = 0; k < 10; k++){
            if(par[i] & (1 << k)) encode_bit(1);
            else encode_bit(0);
        }
    }
    for(int i = 1; i < h; i++){
        vector<int>pc(n, INT_MAX);
        pc[i] = 0;
        int j = 0;
        vector<int>b = {i};
        while(j < b.size()){
            for(auto s:adj[b[j]]){
                if(pc[s] == INT_MAX){
                    pc[s] = pc[b[j]] + 1;
                    b.push_back(s);
                }
            }
            j++;
        }
        for(int k = 1; k < n; k++){
            int diff = pc[k] - pc[par[k]];
            if(diff != 0){
                encode_bit(1);
                if(diff < 0) encode_bit(1);
                else encode_bit(0);
            }else{
                encode_bit(0);
            }
        }
    }
    
    
}

Compilation message

encoder.cpp: In function 'void encode(int, int, int, int*, int*)':
encoder.cpp:26:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |     while(j < d.size()){
      |           ~~^~~~~~~~~~
encoder.cpp:48:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |         while(j < b.size()){
      |               ~~^~~~~~~~~~

decoder.cpp: In function 'void encode(int, int, int, int*, int*)':
decoder.cpp:26:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |     while(j < d.size()){
      |           ~~^~~~~~~~~~
decoder.cpp:48:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   48 |         while(j < b.size()){
      |               ~~^~~~~~~~~~
/usr/bin/ld: /tmp/ccdbvZe6.o: in function `encode(int, int, int, int*, int*)':
decoder.cpp:(.text+0x2d6): undefined reference to `encode_bit(int)'
/usr/bin/ld: decoder.cpp:(.text+0x2ee): undefined reference to `encode_bit(int)'
/usr/bin/ld: decoder.cpp:(.text+0x50b): undefined reference to `encode_bit(int)'
/usr/bin/ld: decoder.cpp:(.text+0x532): undefined reference to `encode_bit(int)'
/usr/bin/ld: decoder.cpp:(.text+0x540): undefined reference to `encode_bit(int)'
/usr/bin/ld: /tmp/cc2vXcb8.o: in function `main':
grader_decoder.c:(.text.startup+0x126): undefined reference to `decode(int, int)'
collect2: error: ld returned 1 exit status