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QOJ

IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#176515#6427. Just Another Game of StoneshazeTL 31ms116572kbC++143.6kb2023-09-11 19:00:352023-09-11 19:00:36

Judging History

你现在查看的是最新测评结果

  • [2023-09-11 19:00:36]
  • 评测
  • 测评结果:TL
  • 用时:31ms
  • 内存:116572kb
  • [2023-09-11 19:00:35]
  • 提交

answer

#pragma GCC optimize("Ofast")
#pragma GCC target("avx2,abm,mmx")
#include<bits/stdc++.h>
#define ll long long
#define irep(i,l,r) for(ll i = l; i <= r; ++i)
using namespace std;
inline int read(){
	int s=0;
	char chcc=getchar();
	while(chcc<'0'||chcc>'9')chcc = getchar();
	while(chcc>='0'&&chcc<='9') s=(s<<3)+(s<<1)+(chcc^48),chcc=getchar();
	return s;
}
const int N = 600999;
const int itinf = 1000000000;
int n, m;
struct node{
	vector<int>bsum;
	int xorsum, mn, smn, len, tag;
	node(){bsum.resize(32);}
}t[N];
/*
void fdmn(vector<int>aa, int &mn, int &smn){
	sort(aa.begin(), aa.end());
	unique(aa.begin(), aa.end());
	mn = aa[0], smn = aa[1];
}
*/
void update(int x){
	t[x].mn = min(t[x << 1].mn, t[x << 1 | 1].mn);
	t[x].smn = itinf;
	if(t[x << 1].mn > t[x].mn)t[x].smn = min(t[x].smn, t[x << 1].mn);
	if(t[x << 1].smn > t[x].mn)t[x].smn = min(t[x].smn, t[x << 1].smn);
	if(t[x << 1 | 1].mn > t[x].mn)t[x].smn = min(t[x].smn, t[x << 1 | 1].mn);
	if(t[x << 1 | 1].smn > t[x].mn)t[x].smn = min(t[x].smn, t[x << 1 | 1].smn);
	
	
//	fdmn({t[x << 1].mn, t[x << 1].smn, t[x << 1 | 1].mn, t[x << 1 | 1].smn}, t[x].mn, t[x].smn);
	t[x].len = 0, t[x].xorsum = t[x << 1].xorsum ^ t[x << 1 | 1].xorsum;
	if(t[x << 1].mn == t[x].mn)t[x].len += t[x << 1 | 1].len;
	if(t[x << 1 | 1].mn == t[x].mn)t[x].len += t[x << 1 | 1].len;
	irep(i,0,31)t[x].bsum[i] = t[x << 1].bsum[i] + t[x << 1 | 1].bsum[i];
}

void operate(int x,int lim){
	if(t[x].len & 1)t[x].xorsum ^= (lim ^ t[x].mn);
	t[x].tag = lim;
	int od = t[x].mn, nw = lim;
	irep(i,0,31){
		t[x].bsum[i] += ((nw & 1) - (od & 1)) * t[x].len;
		nw >>= 1, od >>= 1;
	}
	t[x].mn = lim;
}

void pushdown(int x){
	int tag = t[x].tag;
	t[x].tag = 0;
	if(t[x << 1].mn < tag)operate(x << 1,tag);
	if(t[x << 1 | 1].mn < tag)operate(x << 1 | 1,tag);
}

void build(int x,int l,int r){
	if(l == r){
		int val;
		val = t[x].mn = t[x].xorsum = read();
		t[x].len = 1;
		t[x].smn = t[x].tag = itinf;
		irep(i,0,31){
			t[x].bsum[i] += val & 1;
			val >>= 1;
		}
		return;
	}
	int mid = (l + r) >> 1;
	build(x << 1,l, mid);
	build(x << 1 | 1, mid + 1, r);
	update(x);
	return;
}
void modify(int x,int l,int r,int L,int R, int lim){
	// x -> max(x, val)
	if(l > R || L > r)return;
	if(L <= l && r <= R){
		if(lim <= t[x].mn)return;
		if(l != r && t[x].tag)pushdown(x);
		if(lim < t[x].smn){
			operate(x,lim);
			return;
		}
		int mid = (l + r) >> 1;
		if(l == r)return;
		modify(x << 1,l, mid, L,R,lim);
		modify(x << 1 | 1, mid + 1, r ,L,R,lim);
		update(x);
		return;
	}
	if(l != r && t[x].tag)pushdown(x);
	int mid = (l + r) >> 1;
	modify(x << 1,l, mid, L,R,lim);
	modify(x << 1 | 1, mid + 1, r ,L,R,lim);
	update(x);
	return;
}
int xor_query(int x,int l,int r,int L,int R){
	if(l > R || L > r)return 0;
	if(L <= l && r <= R)return t[x].xorsum;
	if(l != r && t[x].tag)pushdown(x);
	int mid = (l + r) >> 1;
	return xor_query(x << 1,l,mid,L,R) ^ xor_query(x << 1 | 1,mid+1,r,L,R);
}
int bit_cnt(int x,int l, int r, int L ,int R,int id){
	if(l > R || L > r)return 0;
	if(L <= l && r <= R)return t[x].bsum[id];
	if(l != r && t[x].tag)pushdown(x);
	int mid = (l + r) >> 1;
	return bit_cnt(x << 1 ,l,mid,L,R,id) + bit_cnt(x << 1 | 1,mid+1,r,L,R,id);
}
int main(){
	n = read(), m = read();
	build(1,1,n);
	while(m --){
		int op = read(), l = read(), r = read(), x = read();
		if(op == 1){
			modify(1,1,n,l,r,x);
		}else{
			ll key = xor_query(1,1,n,l,r);
			if((key ^ x) == 0){
				puts("0");
				continue;
			}
			int hb = log2(key ^ x);
			ll ans = bit_cnt(1,1,n,l,r,hb);
			if(x & (1 << hb))++ ans;
			printf("%lld\n",ans);
		}
	}
	return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 31ms
memory: 116572kb

input:

5 4
1 2 1 4 1
2 1 3 1
1 2 4 3
2 2 4 4
2 1 4 4

output:

1
0
3

result:

ok 3 number(s): "1 0 3"

Test #2:

score: -100
Time Limit Exceeded

input:

200000 200000
962352030 173642520 1008864183 74920228 684681800 500911321 1001441054 257633652 185843534 59168654 317689197 731348417 123888883 708119712 340055368 876566011 980078202 969174443 814012870 715639041 596932238 173757742 314504576 1045746913 740811577 570187156 999816627 12441059 122507...

output:

38889
57353
46659
19709
34617
92781
5003
755
16087
25151
10557
9165
32119
14339
40007
20537
89963
2167
10523
695
32167
24613
136425
16325
75725
54637
17869
93083
40781
18653
30577
9831
36653
91175
183995
38523
2703
6021
6095
25145
9033
33191
39775
106005
149323
53609
104257
71149
99807
161327
14129
...

result: