Submission #1311916

#	Time	Username	Problem	Language	Result	Execution time	Memory
1311916		eri16	Message (IOI24_message)	C++20	Compilation error	0 ms	0 KiB

message

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

using ll = long long;

void send_message(vector<bool> M, vector<bool> C){
    
    ll n = C.size();
    
    vector <bool> truth(31,true);
    vector <bool> lie(31,false);    
    
    vector <ll> index;
    
    for (int i=0; i<31; i++){
        if (C[i]){send_packet(lie);}
        else{send_packet(truth);index.push_back(i);}
    }
    
    vector <bool> tm = lie;
    
    ll kk = M.size();
    
    for (int j=0; j<16; j=j+1){
        if (kk%16>0){
            kk--;
            tm[index[j]]=true;
        }
    }    
    
    send_packet(tm);
    
    for (int i=0; i<M.size(); i=i+16){
        vector <bool> ans = lie;
        for (int j=0; j<16 && i+j<M.size(); j=j+1){
            if (M[i+j]){
                ans[index[j]]=true;
            }
        }
        send_packet(ans);
    }
}

vector<bool> receive_message(vector<vector<bool>> R){
    vector <ll> idx;
    for (int i=0; i<31; i++){
        ll sm = 0;
        for (int j=0; j<31; j++){
            if (R[i][j]){sm++;}
        }
        if (sm>=16){idx.push_back(i);}
    }
    
    vector <bool> ans;
    ll rem=0;
    
    for (int i=0; j<16; i++){
        if (R[31][idx[i]]){rem++;}
    }
    
    for (int i=31; i<R.size()-1; i++){
        for (int j=0; j<16; j=j+1){
            if (R[i][idx[j]]){ans.push_back(true);}
            else{ans.push_back(false)};
        }
    }
    for (int j=0; j<rem; j=j+1){
        if (R[R.size()-1][idx[j]]){ans.push_back(true);}
        else{ans.push_back(false)};
    }    
    
    return ans;
}

Compilation message (stderr)

message.cpp: In function 'std::vector<bool> receive_message(std::vector<std::vector<bool> >)':
message.cpp:58:19: error: 'j' was not declared in this scope
   58 |     for (int i=0; j<16; i++){
      |                   ^
message.cpp:65:38: error: expected ';' before '}' token
   65 |             else{ans.push_back(false)};
      |                                      ^
      |                                      ;
message.cpp:70:34: error: expected ';' before '}' token
   70 |         else{ans.push_back(false)};
      |                                  ^
      |                                  ;