#include <bits/stdc++.h>
using namespace std;
//#define TEST
#ifndef TEST
#include "office.h"
#endif // TEST
#ifdef TEST
int GetN(){
return 14;
}
int isOnLine(int a, int b, int c){
int ans = 0;
printf("asked %d %d %d\n", a, b, c);
scanf("%d", &ans);
return ans;
}
void Answer(int a1, int b1, int a2, int b2){
printf("Answered %d %d %d %d\n", a1, b1, a2, b2);
}
#endif
#define pb push_back
vector<int> one, zero;
int main(){
int n = GetN();
for (int i = 1; i+2 <= n; i+=3){
if (isOnLine(i, i+1, i+2))
one.pb(i), one.pb(i+1), one.pb(i+2);
else
zero.pb(i), zero.pb(i+1), zero.pb(i+2);
}
if (zero.size() >= 6){
int i, j, k, stop = 0;
for (i = 0; i < 3; i++){
for (j = 3; j < 6; j++){
for (k = j+1; k < 6; k++){
if (isOnLine(zero[i], zero[j], zero[k]))
stop = 1;
if (stop)
break;
}
if (stop)
break;
}
if (stop)
break;
}
int a, b, cnt = 0;
for (int d = 0; d < 6; d++){
if (d == i || d == j || d == k || cnt == 2)
continue;
if (isOnLine(zero[i], zero[j], zero[d]) == 0){
if (cnt == 0)
a = d;
else
b = d;
cnt++;
}
}
Answer(zero[i], zero[j], zero[a], zero[b]);
}
else{
int f = -1;
for (int i = 0; i+6 < one.size(); i+=6){
if (isOnLine(one[i], one[i+3], one[i+6]) == 0){
f = i;
break;
}
}
//printf("after first for, f = %d\n", f), fflush(stdout);
int m = one.size();
if ((m/3)%2 == 0 && f == -1 && isOnLine(one[m-9], one[m-6], one[m-3]) == 0)
f = m-9;
//printf("after case, f = %d\n", f), fflush(stdout);
if (f != -1){
if (isOnLine(one[f], one[f+1], one[f+3]))
Answer(one[f], one[f+1], one[f+6], one[f+7]);
else
Answer(one[f], one[f+1], one[f+3], one[f+4]);
}
else{
//if (zero.size() == 0)
// Answer(0, 0, 0, 0);
vector<int> hel;
if (isOnLine(one[0], one[1], zero[0]) == 0)
hel.pb(zero[0]);
if (isOnLine(one[0], one[1], zero[1]) == 0)
hel.pb(zero[1]);
if (isOnLine(one[0], one[1], zero[2]) == 0)
hel.pb(zero[2]);
if (hel.size() == 1)
Answer(one[0], one[1], hel[0], n);
else
Answer(one[0], one[1], hel[0], hel[1]);
}
}
return 0;
}
Compilation message
highway.cpp: In function 'int main()':
highway.cpp:79:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (int i = 0; i+6 < one.size(); i+=6){
~~~~^~~~~~~~~~~~
highway.cpp:75:49: warning: 'b' may be used uninitialized in this function [-Wmaybe-uninitialized]
Answer(zero[i], zero[j], zero[a], zero[b]);
^
highway.cpp:75:40: warning: 'a' may be used uninitialized in this function [-Wmaybe-uninitialized]
Answer(zero[i], zero[j], zero[a], zero[b]);
^
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);
~~~~~^~~~~~~~~~~
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
256 KB |
Output is correct - 20 queries, 4 points |
| 2 |
Correct |
3 ms |
384 KB |
Output is correct - 10 queries, 4 points |
| 3 |
Correct |
2 ms |
256 KB |
Output is correct - 157 queries, 4 points |
| 4 |
Correct |
2 ms |
384 KB |
Output is correct - 200 queries, 4 points |
| 5 |
Correct |
2 ms |
384 KB |
Output is correct - 251 queries, 4 points |
| 6 |
Correct |
2 ms |
256 KB |
Output is correct - 302 queries, 4 points |
| 7 |
Correct |
2 ms |
512 KB |
Output is correct - 350 queries, 4 points |
| 8 |
Correct |
2 ms |
256 KB |
Output is correct - 400 queries, 4 points |
| 9 |
Correct |
2 ms |
384 KB |
Output is correct - 451 queries, 4 points |
| 10 |
Correct |
2 ms |
256 KB |
Output is correct - 500 queries, 4 points |
| 11 |
Correct |
2 ms |
384 KB |
Output is correct - 1001 queries, 4 points |
| 12 |
Correct |
2 ms |
384 KB |
Output is correct - 1001 queries, 4 points |
| 13 |
Correct |
3 ms |
384 KB |
Output is correct - 1502 queries, 4 points |
| 14 |
Correct |
2 ms |
384 KB |
Output is correct - 2003 queries, 4 points |
| 15 |
Correct |
2 ms |
384 KB |
Output is correct - 2503 queries, 4 points |
| 16 |
Correct |
2 ms |
384 KB |
Output is correct - 803 queries, 4 points |
| 17 |
Correct |
2 ms |
384 KB |
Output is correct - 854 queries, 4 points |
| 18 |
Correct |
2 ms |
384 KB |
Output is correct - 901 queries, 4 points |
| 19 |
Correct |
3 ms |
768 KB |
Output is correct - 12706 queries, 4 points |
| 20 |
Correct |
3 ms |
768 KB |
Output is correct - 15001 queries, 4 points |
| 21 |
Correct |
3 ms |
896 KB |
Output is correct - 20060 queries, 4 points |
| 22 |
Correct |
3 ms |
896 KB |
Output is correct - 28061 queries, 4 points |
| 23 |
Correct |
4 ms |
1276 KB |
Output is correct - 33889 queries, 4 points |
| 24 |
Correct |
4 ms |
1276 KB |
Output is correct - 40945 queries, 4 points |
| 25 |
Correct |
3 ms |
1404 KB |
Output is correct - 49999 queries, 4 points |
