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답안 #701644

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
701644 2023-02-21T16:19:03 Z US3RN4M3 Colors (BOI20_colors) C++17
0 / 100
 1 ms 300 KB 
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
bool ask(ll pos) {
	pos++;
	cout << "? " << pos << endl;
	bool res; cin >> res;
	return res;
}
main() {
	ll n; cin >> n;
	bool parity = true;
	ll lo = 1, hi = n;
	ll pos = (n - 1) / 3;
	ask(pos);
	while(lo != hi) {
		ll mid = (lo + hi - 1) / 2;
		if(parity) {
			pos += mid;
		} else {
			pos -= mid;
		}
		parity = !parity;
		if(ask(pos)) {
			hi = mid;
		} else {
			lo = mid + 1;
		}
	}
	cout << "= " << lo << endl;
}

Compilation message

Colors.cpp:10:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   10 | main() {
      | ^~~~

Subtask #1
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 208 KB OK (4 queries)
2 Correct 0 ms 208 KB OK (7 queries)
3 Correct 0 ms 208 KB OK (4 queries)
4 Correct 0 ms 208 KB OK (5 queries)
5 Correct 0 ms 208 KB OK (5 queries)
6 Correct 1 ms 208 KB OK (7 queries)
7 Correct 0 ms 208 KB OK (7 queries)
8 Correct 1 ms 208 KB OK (6 queries)
9 Correct 0 ms 208 KB OK (7 queries)
10 Correct 0 ms 208 KB OK (4 queries)
11 Correct 0 ms 208 KB OK (5 queries)
12 Correct 0 ms 208 KB OK (6 queries)
13 Correct 0 ms 208 KB OK (7 queries)
14 Runtime error 0 ms 300 KB Execution killed with signal 13
15 Halted 0 ms 0 KB -

Subtask #2
0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 208 KB OK (4 queries)
2 Correct 0 ms 208 KB OK (7 queries)
3 Correct 0 ms 208 KB OK (4 queries)
4 Correct 0 ms 208 KB OK (5 queries)
5 Correct 0 ms 208 KB OK (5 queries)
6 Correct 1 ms 208 KB OK (7 queries)
7 Correct 0 ms 208 KB OK (7 queries)
8 Correct 1 ms 208 KB OK (6 queries)
9 Correct 0 ms 208 KB OK (7 queries)
10 Correct 0 ms 208 KB OK (4 queries)
11 Correct 0 ms 208 KB OK (5 queries)
12 Correct 0 ms 208 KB OK (6 queries)
13 Correct 0 ms 208 KB OK (7 queries)
14 Runtime error 0 ms 300 KB Execution killed with signal 13
15 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 208 KB OK (4 queries)
2 Correct 0 ms 208 KB OK (7 queries)
3 Correct 0 ms 208 KB OK (4 queries)
4 Correct 0 ms 208 KB OK (5 queries)
5 Correct 0 ms 208 KB OK (5 queries)
6 Correct 1 ms 208 KB OK (7 queries)
7 Correct 0 ms 208 KB OK (7 queries)
8 Correct 1 ms 208 KB OK (6 queries)
9 Correct 0 ms 208 KB OK (7 queries)
10 Correct 0 ms 208 KB OK (4 queries)
11 Correct 0 ms 208 KB OK (5 queries)
12 Correct 0 ms 208 KB OK (6 queries)
13 Correct 0 ms 208 KB OK (7 queries)
14 Runtime error 0 ms 300 KB Execution killed with signal 13
15 Halted 0 ms 0 KB -

Subtask #4
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 208 KB OK (4 queries)
2 Correct 0 ms 208 KB OK (7 queries)
3 Correct 0 ms 208 KB OK (4 queries)
4 Correct 0 ms 208 KB OK (5 queries)
5 Correct 0 ms 208 KB OK (5 queries)
6 Correct 1 ms 208 KB OK (7 queries)
7 Correct 0 ms 208 KB OK (7 queries)
8 Correct 1 ms 208 KB OK (6 queries)
9 Correct 0 ms 208 KB OK (7 queries)
10 Correct 0 ms 208 KB OK (4 queries)
11 Correct 0 ms 208 KB OK (5 queries)
12 Correct 0 ms 208 KB OK (6 queries)
13 Correct 0 ms 208 KB OK (7 queries)
14 Runtime error 0 ms 300 KB Execution killed with signal 13
15 Halted 0 ms 0 KB -

Subtask #5
0 / 33.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 208 KB OK (4 queries)
2 Correct 0 ms 208 KB OK (7 queries)
3 Correct 0 ms 208 KB OK (4 queries)
4 Correct 0 ms 208 KB OK (5 queries)
5 Correct 0 ms 208 KB OK (5 queries)
6 Correct 1 ms 208 KB OK (7 queries)
7 Correct 0 ms 208 KB OK (7 queries)
8 Correct 1 ms 208 KB OK (6 queries)
9 Correct 0 ms 208 KB OK (7 queries)
10 Correct 0 ms 208 KB OK (4 queries)
11 Correct 0 ms 208 KB OK (5 queries)
12 Correct 0 ms 208 KB OK (6 queries)
13 Correct 0 ms 208 KB OK (7 queries)
14 Runtime error 0 ms 300 KB Execution killed with signal 13
15 Halted 0 ms 0 KB -