Submission #164239

#	Time	Username	Problem	Language	Result	Execution time	Memory
164239		ivandasfs	Highway design (CEOI12_highway)	C++14	25 / 100	8 ms	1396 KiB

highway

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <vector>
#include <cstdlib>
#include "office.h"


using namespace std;

#define x first
#define y second
#define mp make_pair
#define pb push_back

typedef long long ll;

const ll MOD = 1e9+7;

vector <int> v;

int main() {
	int n = GetN();
	int x, y, z;
	while (1) {
		x = rand()%n + 1;
		y = rand()%n + 1;
		z = rand()%n + 1;
		if (x == y or y == z or z == x) continue;
		if (isOnLine(x, y, z)) break;
	}
	for (int i=1 ; i<=n ; i++) {
		if ((x-i)*(y-i)*(z-i) == 0) continue;
		v.pb(i);
	}
	random_shuffle(v.begin(), v.end());
	vector <int> sol;
	for (int i=0 ; i<v.size() ; i++) {
		if (isOnLine(v[i], x, y) == 0) {
			sol.push_back(v[i]);
			if (sol.size() == 2) break;
		}
	}
	Answer(x, y, sol[0], sol[1]);
	return 0;
}

Compilation message (stderr)

highway.cpp: In function 'int main()':
highway.cpp:38:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i=0 ; i<v.size() ; i++) {
                 ~^~~~~~~~~
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: 25 / 100