Submission #311813

#	Time	Username	Problem	Language	Result	Execution time	Memory
311813		mohamedsobhi777	Highway design (CEOI12_highway)	C++14	25 / 100	3 ms	640 KiB

highway

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

vector<int> line1 , line2 ; 

void finish(){
        Answer(line1[0],line1[1],line2[0] , line2[1]) ; 
        exit(0) ; 
}

int main(){
        int n = GetN() ; 

        bool x1 = isOnLine(1 , 2 , 3) ; 
        if(x1){
                line1 = {1 , 2 , 3} ; 
                for(int i = 4 ;i < n ;++ i){
                        if(!isOnLine(line1[0],line1[1] , i)){
                                line2.push_back(i) ; 
                        }
                        if(line2.size() > 1)
                                break ; 
                }
                if(line2.size() == 1)line2.push_back(n) ; 
                finish() ; 
        }else{
                if(isOnLine(4 , 1 , 2)){
                        line1 = {1 , 2 , 4} ;
                        line2 = {3} ;
                }
                else if(isOnLine(4 , 1 , 3)){
                        line1 = {4 , 1 , 3} ; 
                        line2 = {2} ; 
                }else{
                        line1 = {2 , 3, 4} ; 
                        line2 = {1} ;
                }
                for(int i = 5 ; i < n; i += 2){
                        if(!isOnLine(line1[0],i, i + 1)){
                                if(isOnLine(line1[0],line1[1] , i)){
                                        line2.push_back(i+1) ; 
                                }else line2.push_back(i) ; 
                                break ; 
                        }else{
                                line1.push_back(i) ; 
                                line1.push_back(i+1) ; 
                        }
                }
                if(line2.size() == 1)line2.push_back(n) ; 
                finish() ; 
        }
}

Compilation message (stderr)

office.c: In function 'int isOnLine(int, int, int)':
office.c:85:13: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
   85 |     _Fin(0, "Protocol error");
      |             ^~~~~~~~~~~~~~~~
office.c:88:13: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
   88 |     _Fin(0, "Protocol error");
      |             ^~~~~~~~~~~~~~~~
office.c:92:17: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
   92 |     _Fin(false, "Too many questions");
      |                 ^~~~~~~~~~~~~~~~~~~~
office.c:83:7: warning: unused variable 'i' [-Wunused-variable]
   83 |   int i;
      |       ^
office.c: In function 'void Answer(int, int, int, int)':
office.c:123:13: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
  123 |     _Fin(0, "Protocol error");
      |             ^~~~~~~~~~~~~~~~
office.c:128:44: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  128 |       if( (-_Apa[na1]==_N-3) && (na2!=na1) && (nb2!=na1) ||
      |           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
office.c:130:21: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
  130 |          _Fin(true, "Correct");
      |                     ^~~~~~~~~
office.c:132:22: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
  132 |          _Fin(false, "Wrong answer");
      |                      ^~~~~~~~~~~~~~
office.c:134:44: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
  134 |       if( (-_Apa[na2]==_N-3) && (na1!=na2) && (nb1!=na2) ||
      |           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
office.c:136:21: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
  136 |          _Fin(true, "Correct");
      |                     ^~~~~~~~~
office.c:138:22: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
  138 |          _Fin(false, "Wrong answer");
      |                      ^~~~~~~~~~~~~~
office.c:140:19: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
  140 |       _Fin(false, "Wrong answer");
      |                   ^~~~~~~~~~~~~~
office.c:142:14: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
  142 |   _Fin(true, "Correct");
      |              ^~~~~~~~~
office.c:120:27: warning: unused variable 'pont' [-Wunused-variable]
  120 |   int na1, nb1, na2, nb2, pont;
      |                           ^~~~
office.c: In function 'void _doInit()':
office.c:33:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   33 |     scanf("%d", &_N);
      |     ~~~~~^~~~~~~~~~~

• Subtask 1: 25 / 100