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답안 #78670

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
78670 2018-10-07T01:50:29 Z tmwilliamlin168 Deda (COCI17_deda) C++14
140 / 140
 134 ms 6820 KB 
#include <bits/stdc++.h>
using namespace std;

const int mxN=2e5;
int n, q, a, b, st[1<<19];
char qt;

void upd(int l1, int x, int i=1, int l2=0, int r2=n-1) {
	st[i]=min(x, st[i]);
	if(l2==r2)
		return;
	int m2=(l2+r2)/2;
	if(l1<=m2)
		upd(l1, x, 2*i, l2, m2);
	else
		upd(l1, x, 2*i+1, m2+1, r2);
}

int qry(int l1, int x, int i=1, int l2=0, int r2=n-1) {
	if(st[i]>x)
		return -2;
	if(l2==r2)
		return l2;
	int m2=(l2+r2)/2;
	int r=-2;
	if(l1<=m2)
		r=qry(l1, x, 2*i, l2, m2);
	if(r==-2)
		r=qry(l1, x, 2*i+1, m2+1, r2);
	return r;
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	
	cin >> n >> q;
	memset(st, 0x3f, sizeof(st));
	while(q--) {
		cin >> qt >> a >> b, --b;
		if(qt=='M')
			upd(b, a);
		else
			cout << qry(b, a)+1 << "\n";
	}
}

Subtask #1
140.0 / 140.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 2424 KB Output is correct
2 Correct 5 ms 2432 KB Output is correct
3 Correct 7 ms 2496 KB Output is correct
4 Correct 100 ms 6820 KB Output is correct
5 Correct 107 ms 6820 KB Output is correct
6 Correct 134 ms 6820 KB Output is correct
7 Correct 115 ms 6820 KB Output is correct