// M
#include<bits/stdc++.h>
#include "office.h"
using namespace std;
const int N = 100005;
int main()
{
int n = GetN();
if (isOnLine(1, 2, 3))
{
vector < int > vec;
for (int i = 4; i + 1 <= n && (int)vec.size() <= 1; i += 2)
if (!isOnLine(1, i, i + 1))
vec.push_back(i);
if ((int)vec.size() == 2)
{
int a = vec[0] + (int)isOnLine(1, 2, vec[0]);
int b = vec[1] + (int)isOnLine(1, 2, vec[1]);
Answer(1, 2, a, b);
return 0;
}
assert((int)vec.size());
if (n % 2 == 1)
{
Answer(1, 2, vec[0], vec[0] + 1);
return 0;
}
if (isOnLine(1, 2, vec[0]))
{
Answer(1, 2, vec[0] + 1, n);
return 0;
}
if (isOnLine(1, 2, vec[0] + 1))
{
Answer(1, 2, vec[0], n);
return 0;
}
Answer(1, 2, vec[0], vec[0] + 1);
return 0;
}
int traitor = -1;
if (isOnLine(1, 2, 4))
traitor = 3;
else if (isOnLine(1, 3, 4))
traitor = 2;
else if (isOnLine(2, 3, 4))
traitor = 1;
if (traitor == -1)
{
for (int i = 1; i <= 4; i ++)
for (int j = i + 1; j <= 4; j ++)
if (isOnLine(i, j, 5))
{
int a = 1;
while (a == i || a == j)
a ++;
int b = a + 1;
while (b == i || b == j)
b ++;
Answer(i, j, a, b);
return 0;
}
}
int good_samaritan_1 = (traitor == 1) ? 2 : 1;
int good_samaritan_2 = (traitor <= 2) ? 3 : 2;
vector < int > vec;
for (int i = 5; i + 1 <= n && !(int)vec.size(); i += 2)
if (!isOnLine(good_samaritan_1, i, i + 1))
vec.push_back(i);
if (!(int)vec.size())
{
assert(n % 2 == 1);
Answer(good_samaritan_1, good_samaritan_2, traitor, n);
return 0;
}
if (isOnLine(good_samaritan_1, good_samaritan_2, vec[0]))
Answer(good_samaritan_1, good_samaritan_2, traitor, vec[0] + 1);
else
Answer(good_samaritan_1, good_samaritan_2, traitor, vec[0]);
return 0;
}
Compilation message
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);
| ~~~~~^~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
256 KB |
Output is correct - 21 queries, 4 points |
| 2 |
Correct |
0 ms |
256 KB |
Output is correct - 11 queries, 4 points |
| 3 |
Correct |
0 ms |
256 KB |
Output is correct - 157 queries, 4 points |
| 4 |
Correct |
0 ms |
256 KB |
Output is correct - 202 queries, 4 points |
| 5 |
Correct |
0 ms |
384 KB |
Output is correct - 252 queries, 4 points |
| 6 |
Correct |
0 ms |
256 KB |
Output is correct - 303 queries, 4 points |
| 7 |
Correct |
0 ms |
256 KB |
Output is correct - 351 queries, 4 points |
| 8 |
Correct |
0 ms |
256 KB |
Output is correct - 401 queries, 4 points |
| 9 |
Correct |
0 ms |
256 KB |
Output is correct - 451 queries, 4 points |
| 10 |
Correct |
0 ms |
256 KB |
Output is correct - 502 queries, 4 points |
| 11 |
Correct |
0 ms |
384 KB |
Output is correct - 1002 queries, 4 points |
| 12 |
Correct |
0 ms |
384 KB |
Output is correct - 1003 queries, 4 points |
| 13 |
Correct |
1 ms |
384 KB |
Output is correct - 1503 queries, 4 points |
| 14 |
Correct |
1 ms |
384 KB |
Output is correct - 2004 queries, 4 points |
| 15 |
Correct |
1 ms |
384 KB |
Output is correct - 2504 queries, 4 points |
| 16 |
Correct |
0 ms |
256 KB |
Output is correct - 805 queries, 4 points |
| 17 |
Correct |
0 ms |
384 KB |
Output is correct - 855 queries, 4 points |
| 18 |
Correct |
0 ms |
256 KB |
Output is correct - 901 queries, 4 points |
| 19 |
Correct |
1 ms |
384 KB |
Output is correct - 12707 queries, 4 points |
| 20 |
Correct |
1 ms |
384 KB |
Output is correct - 15001 queries, 4 points |
| 21 |
Correct |
1 ms |
512 KB |
Output is correct - 20062 queries, 4 points |
| 22 |
Correct |
1 ms |
512 KB |
Output is correct - 28063 queries, 4 points |
| 23 |
Correct |
1 ms |
640 KB |
Output is correct - 33890 queries, 4 points |
| 24 |
Correct |
1 ms |
640 KB |
Output is correct - 40945 queries, 4 points |
| 25 |
Correct |
1 ms |
768 KB |
Output is correct - 50000 queries, 4 points |
