Submission #224418

#	Time	Username	Problem	Language	Result	Execution time	Memory
224418		MKopchev	Highway design (CEOI12_highway)	C++14	100 / 100	5 ms	640 KiB

highway

#include<bits/stdc++.h>
#include "office.h"

using namespace std;
/*
int GetN()
{
    int ret;
    cin>>ret;
    return ret;
}
bool isOnLine(int x,int y,int z)
{
    cout<<x<<" "<<y<<" "<<z<<endl;
    int ret;
    cin>>ret;
    return ret;
}
void Answer(int a1,int a2,int b1,int b2)
{
    cout<<a1<<" "<<a2<<" "<<b1<<" "<<b2<<endl;
}
*/
int main()
{
	int n=GetN();

	assert(isOnLine(1,2,3)==1);

	int a1=1,a2=2;

	vector<int> b={};
	int i;
	for(i=4;i<=n&&b.size()<2;i=i+2)
    {
        if(i==n)b.push_back(i);
        else
        {
            if(isOnLine(a1,i,i+1)==0)
            {
                if(isOnLine(a1,a2,i)==0)
                {
                    b.push_back(i);
                    if(b.size()==2)break;
                    if(isOnLine(a1,a2,i+1)==0)b.push_back(i+1);
                }
                else b.push_back(i+1);
            }
        }
    }

    Answer(a1,a2,b[0],b[1]);
    return 0;
}

Compilation message (stderr)

office.c: In function 'int isOnLine(int, int, int)':
office.c:85:29: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
     _Fin(0, "Protocol error");
                             ^
office.c:88:29: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
     _Fin(0, "Protocol error");
                             ^
office.c:92:37: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
     _Fin(false, "Too many questions");
                                     ^
office.c:83:7: warning: unused variable 'i' [-Wunused-variable]
   int i;
       ^
office.c: In function 'void Answer(int, int, int, int)':
office.c:123:29: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
     _Fin(0, "Protocol error");
                             ^
office.c:128:44: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
       if( (-_Apa[na1]==_N-3) && (na2!=na1) && (nb2!=na1) ||
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
office.c:130:30: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
          _Fin(true, "Correct");
                              ^
office.c:132:36: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
          _Fin(false, "Wrong answer");
                                    ^
office.c:134:44: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
       if( (-_Apa[na2]==_N-3) && (na1!=na2) && (nb1!=na2) ||
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~
office.c:136:30: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
          _Fin(true, "Correct");
                              ^
office.c:138:36: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
          _Fin(false, "Wrong answer");
                                    ^
office.c:140:33: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
       _Fin(false, "Wrong answer");
                                 ^
office.c:142:23: warning: ISO C++ forbids converting a string constant to 'char*' [-Wwrite-strings]
   _Fin(true, "Correct");
                       ^
office.c:120:27: warning: unused variable 'pont' [-Wunused-variable]
   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]
     scanf("%d", &_N);
     ~~~~~^~~~~~~~~~~

• Subtask 1: 100 / 100