Submission #1166086

#	Time	Username	Problem	Language	Result	Execution time	Memory
1166086		12345678	Highway design (CEOI12_highway)	C++20	100 / 100	1 ms	584 KiB

highway

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

using namespace std;

const int nx=1e5+5;

int n, a, b, st;
vector<int> v;

int main()
{
    n=GetN();
    if (isOnLine(1, 2, 3)) a=1, b=2, st=4;
    else
    {
        if (isOnLine(1, 2, 4)) a=1, b=2, st=5, v.push_back(3);
        else if (isOnLine(1, 3, 4)) a=1, b=3, st=5, v.push_back(2);
        else if (isOnLine(2, 3, 4)) a=2, b=3, st=5, v.push_back(1);
        else
        {
            if (isOnLine(1, 2, 5)) v.push_back(3), v.push_back(4);
            else if (isOnLine(1, 3, 5)) v.push_back(2), v.push_back(4);
            else if (isOnLine(1, 4, 5)) v.push_back(2), v.push_back(3);
            else if (isOnLine(2, 3, 5)) v.push_back(1), v.push_back(4);
            else if (isOnLine(2, 4, 5)) v.push_back(1), v.push_back(3);
            else v.push_back(1), v.push_back(2);
        }
    }
    for (int i=st; i+1<=n; i+=2)
    {
        if (v.size()>=2) break;
        if (isOnLine(a, i, i+1)) continue;
        if (isOnLine(a, b, i)) v.push_back(i+1);
        else v.push_back(i); 
    }
    if (v.size()<2) v.push_back(n);
    Answer(a, b, v[0], v[1]);
}

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: 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: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: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: 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: 100 / 100