結果

問題 No.875 Range Mindex Query
コンテスト
ユーザー mkawa2
提出日時 2021-03-18 16:50:03
言語 PyPy3
(7.3.15)
結果
AC  
実行時間 368 ms / 2,000 ms
コード長 3,943 bytes
記録
コンパイル時間 295 ms
コンパイル使用メモリ 82,432 KB
実行使用メモリ 94,848 KB
最終ジャッジ日時 2024-11-16 20:08:48
合計ジャッジ時間 5,980 ms
ジャッジサーバーID
（参考情報） 		judge5 / judge3
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 1
other AC * 18
権限があれば一括ダウンロードができます

ソースコード

diff #
raw source code 

import sys

sys.setrecursionlimit(10**6)
int1 = lambda x: int(x)-1
p2D = lambda x: print(*x, sep="\n")
def II(): return int(sys.stdin.buffer.readline())
def LI(): return list(map(int, sys.stdin.buffer.readline().split()))
def LI1(): return list(map(int1, sys.stdin.buffer.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def LLI1(rows_number): return [LI1() for _ in range(rows_number)]
def BI(): return sys.stdin.buffer.readline().rstrip()
def SI(): return sys.stdin.buffer.readline().rstrip().decode()
# dij = [(0, 1), (-1, 0), (0, -1), (1, 0)]
dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)]
inf = 10**16
md = 998244353
# md = 10**9+7

class SegtreeMin():
    def __init__(self, n):
        self.inf = 10**16
        aa = []
        if not isinstance(n, int):
            aa = n
            n = len(aa)
        self.tree_width = tw = 1 << (n-1).bit_length()
        self.tree = [self.inf]*(tw*2-1)
        self.idx = [self.inf]*(tw*2-1)
        if aa:
            self.tree[tw-1:tw-1+len(aa)] = aa
            self.idx[tw-1:tw-1+len(aa)] = list(range(n))
            for i in range(tw-2, -1, -1):
                if self.tree[i*2+1] < self.tree[i*2+2]:
                    self.tree[i] = self.tree[i*2+1]
                    self.idx[i] = self.idx[i*2+1]
                else:
                    self.tree[i] = self.tree[i*2+2]
                    self.idx[i] = self.idx[i*2+2]

    def update(self, i, a):
        seg_i = self.tree_width-1+i
        self.tree[seg_i] = a
        while seg_i != 0:
            seg_i = (seg_i-1)//2
            if self.tree[seg_i*2+1] < self.tree[seg_i*2+2]:
                self.tree[seg_i] = self.tree[seg_i*2+1]
                self.idx[seg_i] = self.idx[seg_i*2+1]
            else:
                self.tree[seg_i] = self.tree[seg_i*2+2]
                self.idx[seg_i] = self.idx[seg_i*2+2]

    def __getitem__(self, item):
        return self.tree[self.tree_width-1+item]

    def element(self, i):
        return self.tree[self.tree_width-1+i]

    # [l,r)の最小値
    def min(self, l, r):
        res = self.inf
        resi=0
        stack = [(0, 0, self.tree_width)]
        while stack:
            seg_i, segL, segR = stack.pop()
            if l <= segL and segR <= r:
                if self.tree[seg_i] < res:
                    res = self.tree[seg_i]
                    resi=self.idx[seg_i]
            else:
                segM = (segL+segR)//2
                if r > segL and segM > l:
                    stack.append((seg_i*2+1, segL, segM))
                if r > segM and segR > l:
                    stack.append((seg_i*2+2, segM, segR))
        return resi,res

    # [l,r)でaより小さい要素のうち最右のインデックス
    def LessR(self, l, r, a):
        stack = [(0, 0, self.tree_width)]
        while stack:
            u, ul, ur = stack.pop()
            if ur-ul == 1: return u-self.tree_width+1
            um = (ul+ur)//2
            if self.tree[u*2+1] < a and ul < r and l < um:
                stack.append((u*2+1, ul, um))
            if self.tree[u*2+2] < a and um < r and l < ur:
                stack.append((u*2+2, um, ur))
        return -1

    # [l,r)でaより小さい要素のうち最左のインデックス
    def LessL(self, l, r, a):
        stack = [(0, 0, self.tree_width)]
        while stack:
            u, ul, ur = stack.pop()
            if ur-ul == 1: return u-self.tree_width+1
            um = (ul+ur)//2
            if self.tree[u*2+2] < a and um < r and l < ur:
                stack.append((u*2+2, um, ur))
            if self.tree[u*2+1] < a and ul < r and l < um:
                stack.append((u*2+1, ul, um))
        return -1

n,q=LI()
aa=LI()
st=SegtreeMin(aa)
for _ in range(q):
    t,l,r=LI1()
    if t==0:
        a=st[l]
        b=st[r]
        st.update(l,b)
        st.update(r,a)
    else:
        ans,_=st.min(l,r+1)
        print(ans+1)
0