#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef long double ld;
typedef complex<ld> cd;
typedef pair<int, int> pi;
typedef pair<ll,ll> pl;
typedef pair<ld,ld> pd;
typedef vector<int> vi;
typedef vector<ld> vd;
typedef vector<ll> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
typedef vector<cd> vcd;
template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>;
#define FOR(i, a, b) for (int i=a; i<(b); i++)
#define F0R(i, a) for (int i=0; i<(a); i++)
#define FORd(i,a,b) for (int i = (b)-1; i >= a; i--)
#define F0Rd(i,a) for (int i = (a)-1; i >= 0; i--)
#define sz(x) (int)(x).size()
#define mp make_pair
#define pb push_back
#define f first
#define s second
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()
const int MOD = 1000000007;
const ll INF = 1e18;
const int MX = 100001;
#include "office.h"
extern int GetN(); /* {
return 8;
}
int get (int x) {
if (x == 1 || x == 3 || x == 4) return 0;
return 1;
}
int bad = 0;*/
extern int isOnLine(int x, int y, int z); /* {
bad ++;
if (get(x) != get(y)) return 0;
if (get(x) != get(z)) return 0;
return 1;
}*/
extern void Answer(int a1, int b1, int a2, int b2); /* {
cout << a1 << " " << b1 << " " << a2 << " " << b2 << "\n";
}*/
int N = GetN();
void solve3(int i, int j, int k) {
vi posi, cans;
FOR(i,4,N+1) posi.pb(i);
while (sz(posi)+sz(cans) > 2) {
if (!isOnLine(i,posi[sz(posi)-1],posi[sz(posi)-2])) {
if (!isOnLine(i,j,posi[sz(posi)-1])) {
cans.pb(posi[sz(posi)-1]);
if (!isOnLine(i,j,sz(posi)-2)) {
cans.pb(posi[sz(posi)-2]);
}
} else {
cans.pb(posi[sz(posi)-2]);
}
}
posi.pop_back();
posi.pop_back();
if (sz(cans) > 1) {
Answer(i,j,cans[0],cans[1]);
return;
}
}
for (int x: posi) cans.pb(x);
Answer(i,j,cans[0],cans[1]);
}
void solve4(int i, int j, int k) {
vi posi, cans;
FOR(i,5,N+1) posi.pb(i);
cans.pb(1+2+3+4-i-j-k);
while (sz(posi)+sz(cans) > 2) {
if (!isOnLine(i,posi[sz(posi)-1],posi[sz(posi)-2])) {
if (!isOnLine(i,j,posi[sz(posi)-1])) {
cans.pb(posi[sz(posi)-1]);
} else {
cans.pb(posi[sz(posi)-2]);
}
}
posi.pop_back();
posi.pop_back();
if (sz(cans) > 1) {
Answer(i,j,cans[0],cans[1]);
return;
}
}
for (int x: posi) cans.pb(x);
Answer(i,j,cans[0],cans[1]);
}
void solve5(int i, int j, int k) {
vi v;
FOR(x,1,6) if (x != i && x != j && x != k) v.pb(x);
Answer(i,j,v[0],v[1]);
}
int main() {
ios_base::sync_with_stdio(0); cin.tie(0);
FOR(i,3,6) FOR(j,1,i) FOR(k,1,j) if (isOnLine(i,j,k)) {
if (i == 3) solve3(i,j,k);
else if (i == 4) solve4(i,j,k);
else solve5(i,j,k);
exit(0);
}
}
// read the question correctly (is y a vowel? what are the exact constraints?)
// look out for SPECIAL CASES (n=1?) and overflow (ll vs int?)
Compilation message
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 |
3 ms |
376 KB |
Output is correct - 21 queries, 4 points |
| 2 |
Correct |
2 ms |
488 KB |
Output is correct - 11 queries, 4 points |
| 3 |
Correct |
3 ms |
488 KB |
Output is correct - 157 queries, 4 points |
| 4 |
Incorrect |
3 ms |
600 KB |
Output isn't correct - Protocol error |
| 5 |
Correct |
2 ms |
708 KB |
Output is correct - 252 queries, 4 points |
| 6 |
Incorrect |
3 ms |
708 KB |
Output isn't correct - Protocol error |
| 7 |
Correct |
2 ms |
708 KB |
Output is correct - 351 queries, 4 points |
| 8 |
Correct |
2 ms |
708 KB |
Output is correct - 401 queries, 4 points |
| 9 |
Correct |
3 ms |
800 KB |
Output is correct - 451 queries, 4 points |
| 10 |
Incorrect |
2 ms |
800 KB |
Output isn't correct - Protocol error |
| 11 |
Correct |
3 ms |
800 KB |
Output is correct - 1002 queries, 4 points |
| 12 |
Incorrect |
2 ms |
800 KB |
Output isn't correct - Protocol error |
| 13 |
Correct |
2 ms |
800 KB |
Output is correct - 1503 queries, 4 points |
| 14 |
Incorrect |
3 ms |
800 KB |
Output isn't correct - Protocol error |
| 15 |
Correct |
3 ms |
800 KB |
Output is correct - 2504 queries, 4 points |
| 16 |
Incorrect |
3 ms |
800 KB |
Output isn't correct - Protocol error |
| 17 |
Correct |
3 ms |
800 KB |
Output is correct - 855 queries, 4 points |
| 18 |
Correct |
2 ms |
800 KB |
Output is correct - 901 queries, 4 points |
| 19 |
Incorrect |
2 ms |
1020 KB |
Output isn't correct - Protocol error |
| 20 |
Correct |
3 ms |
1152 KB |
Output is correct - 15001 queries, 4 points |
| 21 |
Incorrect |
3 ms |
1408 KB |
Output isn't correct - Protocol error |
| 22 |
Incorrect |
3 ms |
1456 KB |
Output isn't correct - Protocol error |
| 23 |
Incorrect |
4 ms |
1756 KB |
Output isn't correct - Protocol error |
| 24 |
Correct |
4 ms |
1756 KB |
Output is correct - 40945 queries, 4 points |
| 25 |
Correct |
5 ms |
1852 KB |
Output is correct - 50000 queries, 4 points |
