#include <bits/stdc++.h>
using namespace std;
#define FOR(i, j, k) for(int i=(j); i<=(k); i++)
#define FFOR(i, j, k) for(int i=(j); i<(k); i++)
#define DFOR(i, j, k) for(int i=(j); i>=(k); i--)
#define bug(x) cerr<<#x<<" = "<<(x)<<'\n'
#define pb push_back
#define mp make_pair
#define bit(s, i) (((s)>>(i))&1LL)
#define mask(i) ((1LL<<(i)))
#define builtin_popcount __builtin_popcountll
#define __builtin_popcount __builtin_popcountll
using ll=long long; using ld=long double;
mt19937_64 rng(chrono::high_resolution_clock::now().time_since_epoch().count()); const ld pi=acos(0)*2;
template <typename T> inline void read(T &x){char c; bool nega=0; while((!isdigit(c=getchar()))&&(c!='-')); if(c=='-'){nega=1; c=getchar();} x=c-48; while(isdigit(c=getchar())) x=x*10+c-48; if(nega) x=-x;}
template <typename T> inline void writep(T x){if(x>9) writep(x/10); putchar(x%10+48);}
template <typename T> inline void write(T x){if(x<0){ putchar('-'); x=-x;} writep(x);}
template <typename T> inline void writeln(T x){write(x); putchar('\n');}
#define taskname "Highway"
#ifdef Aria
void Answer(int a, int b, int c, int d){}
bool isOnLine(int a, int b, int c){}
int GetN(){};
#else
#include "office.h"
#endif // Aria
int n;
int a=1;
int x, y, z, t;
void answer(int a, int b, int c, int d){
// assert(a);
// assert(b);
// assert(c);
// assert(d);
// assert(a!=b);
// assert(a!=c);
// assert(a!=d);
// assert(b!=c);
// assert(b!=d);
// assert(c!=d);
Answer(a, b, c, d);
exit(0);
}
bool isonline(int a, int b, int c){
// assert(a);
// assert(b);
// assert(c);
// assert(a!=b);
// assert(a!=c);
// assert(b!=c);
return isOnLine(a, b, c);
}
vector <int> all;
int main(){
n=GetN();
FOR(i, 1, n) all.pb(i);
shuffle(all.begin(), all.end(), rng);
a=all.back();
all.pop_back();
// bool bad=1;
while(true){
int b=all.back();
all.pop_back();
int c=all.back();
all.pop_back();
if(isonline(a, b, c)){
t=b;
continue;
}
else{
// assert(all.size());
int d=all.back();
all.pop_back();
if(isonline(a, b, d)){
x=a;
y=b;
z=c;
}
else if(isonline(a, c, d)){
x=a;
y=c;
z=b;
}
else{
x=b;
y=c;
z=a;
// if(t) answer(x, y, z, t);
all.pb(d);
}
// bad=0;
break;
}
}
// assert(0);
FOR(p, 1, n){
if(p==x||p==y||p==z) continue;
if(!isonline(x, y, p)){
t=p;
break;
}
}
// while(true){
// int p=all.back();
// all.pop_back();
//// int q=all.back();
//// all.pop_back();
//// if(isonline(x, p, q)) continue;
// if(!isonline(x, y, p)){
// t=p;
// break;
// }
// }
answer(x, y, z, t);
}
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 |
2 ms |
256 KB |
Output is correct - 22 queries, 4 points |
| 2 |
Correct |
2 ms |
256 KB |
Output is correct - 12 queries, 4 points |
| 3 |
Correct |
2 ms |
384 KB |
Output is correct - 158 queries, 4 points |
| 4 |
Incorrect |
2 ms |
384 KB |
Output isn't correct - Wrong answer |
| 5 |
Correct |
2 ms |
256 KB |
Output is correct - 253 queries, 4 points |
| 6 |
Incorrect |
2 ms |
384 KB |
Output isn't correct - Wrong answer |
| 7 |
Correct |
2 ms |
256 KB |
Output is correct - 352 queries, 4 points |
| 8 |
Correct |
2 ms |
384 KB |
Output is correct - 402 queries, 4 points |
| 9 |
Correct |
2 ms |
384 KB |
Output is correct - 452 queries, 4 points |
| 10 |
Incorrect |
2 ms |
384 KB |
Output isn't correct - Wrong answer |
| 11 |
Correct |
2 ms |
384 KB |
Output is correct - 1003 queries, 4 points |
| 12 |
Incorrect |
2 ms |
384 KB |
Output isn't correct - Wrong answer |
| 13 |
Correct |
2 ms |
384 KB |
Output is correct - 1504 queries, 4 points |
| 14 |
Incorrect |
2 ms |
384 KB |
Output isn't correct - Wrong answer |
| 15 |
Correct |
2 ms |
384 KB |
Output is correct - 2505 queries, 4 points |
| 16 |
Incorrect |
2 ms |
384 KB |
Output isn't correct - Wrong answer |
| 17 |
Correct |
2 ms |
384 KB |
Output is correct - 856 queries, 4 points |
| 18 |
Correct |
2 ms |
384 KB |
Output is correct - 902 queries, 4 points |
| 19 |
Incorrect |
3 ms |
640 KB |
Output isn't correct - Wrong answer |
| 20 |
Correct |
4 ms |
768 KB |
Output is correct - 15002 queries, 4 points |
| 21 |
Incorrect |
3 ms |
896 KB |
Output isn't correct - Wrong answer |
| 22 |
Incorrect |
4 ms |
1024 KB |
Output isn't correct - Wrong answer |
| 23 |
Incorrect |
5 ms |
1276 KB |
Output isn't correct - Wrong answer |
| 24 |
Correct |
5 ms |
1276 KB |
Output is correct - 40946 queries, 4 points |
| 25 |
Correct |
6 ms |
1404 KB |
Output is correct - 50001 queries, 4 points |
