Submission #959504

#	Time	Username	Problem	Language	Result	Execution time	Memory
959504		idas	Worm Worries (BOI18_worm)	C++11	10 / 100	1 ms	356 KiB

worm

#include <iostream>
#include <cstdlib>
using namespace std;

int main(){
	int n, m, k, maxq;
	cin >> n >> m >> k >> maxq;
	// m, k should be 1

	int lo = 1, hi = n+1;
	// we want local maximum somewhere in [lo, hi)
	while(lo+1 < hi){
		int mi = (lo + hi) / 2;

		int r1, r2;
		cout << "? " << mi-1 << " 1 1" << endl;
		cin >> r1;
		if (r1 == -1) exit(0);
		cout << "? " << mi   << " 1 1" << endl;
		cin >> r2;
		if (r2 == -1) exit(0);

		if(r1 >= r2) hi = mi;
		else lo = mi;
	}

	cout << "! " << lo << " 1 1" << endl;
}

• Subtask 1: 10 / 10
• Subtask 2: 0 / 22
• Subtask 3: 0 / 12
• Subtask 4: 0 / 19
• Subtask 5: 0 / 14
• Subtask 6: 0 / 23