Submission #167508

#	Time	Username	Problem	Language	Result	Execution time	Memory
167508		Thuleanx	Lollipop (POI11_liz)	C++14	100 / 100	539 ms	51088 KiB

liz

#include <bits/stdc++.h>
using namespace std;

int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);

	int n, m; cin>>n>>m;
	string s; cin>>s;

	int p[n];
	for (int i = 0; i < n; i++)
		p[i] = (i?p[i-1]:0) + (s[i] == 'T' ? 2 : 1);
	int st = 0, tt = n-1;
	while (st < n && s[st] == 'T')
		st++;
	while (tt >= 0 && s[tt] == 'T')
		tt--;

	stringstream ss;
	while (m--) {
		int x; cin>>x;
		if (p[n-1] - (st?p[st-1]:0) >= x) {
			// always possible
			int lo = st, hi = n-1;
			int left = st?p[st-1]:0;
			while (lo <= hi) {
				int mid = lo+hi>>1;
				if (p[mid] - left >= x)
					hi = mid-1;
				else lo = mid+1;
			}
			ss << st+1+(p[lo]-left>x) << " " << lo+1 << endl;
		} else if (p[tt] >= x) {
			// always possible
			int lo = 0, hi = tt;
			while (lo <= hi) {
				int mid = lo+hi>>1;
				if (p[tt] - (mid?p[mid-1]:0) >= x)
					lo = mid+1;
				else hi = mid-1;
			}
			ss << hi+1 << " " << tt + 1 - (p[tt] - (hi?p[hi-1]:0) > x) << endl;
		} else {
			// maybe not
			int lo = 0, hi = n-1;
			while (lo <= hi) {
				int mid = lo+hi>>1;
				if (p[mid] >= x) hi = mid-1;
				else lo = mid+1;
			}
			if (p[lo] == x)
				ss << 1 << " " << lo+1 << endl;
			else
				ss << "NIE" << endl;
		}
	}
	cout << ss.str();

	return 0;
}

Compilation message (stderr)

liz.cpp: In function 'int main()':
liz.cpp:28:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int mid = lo+hi>>1;
               ~~^~~
liz.cpp:38:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int mid = lo+hi>>1;
               ~~^~~
liz.cpp:48:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
     int mid = lo+hi>>1;
               ~~^~~

• Subtask 1: 8 / 8
• Subtask 2: 8 / 8
• Subtask 3: 8 / 8
• Subtask 4: 8 / 8
• Subtask 5: 8 / 8
• Subtask 6: 8 / 8
• Subtask 7: 8 / 8
• Subtask 8: 8 / 8
• Subtask 9: 9 / 9
• Subtask 10: 9 / 9
• Subtask 11: 9 / 9
• Subtask 12: 9 / 9