Submission #94929

#	Time	Username	Problem	Language	Result	Execution time	Memory
94929		popovicirobert	Highway design (CEOI12_highway)	C++14	100 / 100	9 ms	632 KiB

highway

#include <stdlib.h>
#include <iostream>
#include <string>
#include "office.h"
#define _MaxN	100001
using namespace std;


int main() {
    int n, i;
    n = GetN();
    pair <int, int> l1 = {-1, -1}, l2;
    bool ok = 1;
    for(int a = 1; a <= 2 && ok; a++) {
        for(int b = a + 1; b <= 3 && ok; b++) {
            for(int c = b + 1; c <= 4 && ok; c++) {
                if(isOnLine(a, b, c)) {
                    l1 = {a, b};
                    l2.first = (1 ^ 2 ^ 3 ^ 4 ^ a ^ b ^ c);
                    ok = 0;
                }
            }
        }
    }
    if(l1.first == -1) {
        if(isOnLine(1, 2, 5) || isOnLine(3, 4, 5)) {
            Answer(1, 2, 3, 4);
        }
        if(isOnLine(1, 3, 5) || isOnLine(2, 4, 5)) {
            Answer(1, 3, 2, 4);
        }
        if(isOnLine(1, 4, 5) || isOnLine(2, 3, 5)) {
            Answer(1, 4, 2, 3);
        }
    }
    else {
        for(i = 5; i <= n; i += 2) {
            if(isOnLine(l1.first, i, i + 1)) {
                continue;
            }
            if(isOnLine(l1.first, l1.second, i)) {
                l2.second = i + 1;
            }
            else {
                l2.second = i;
            }
            break;
        }
        Answer(l1.first, l1.second, l2.first, l2.second);
    }
    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