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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#176537 | #6427. Just Another Game of Stones | haze | TL | 31ms | 116496kb | C++14 | 3.7kb | 2023-09-11 19:27:44 | 2023-09-11 19:27:45 |
Judging History
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(){
clock_t st = clock();
n = read(), m = read();
build(1,1,n);
while(m --){
clock_t cur = clock();
if(cur - st >= 2000000){
cout << m << endl;
}
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;
if(n <= 10000)printf("%lld\n",ans);
}
}
return 0;
}
Details
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Test #1:
score: 100
Accepted
time: 31ms
memory: 116496kb
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:
171589 171588 171587 171586 171585 171584 171583 171582 171581 171580 171579 171578 171577 171576 171575 171574 171573 171572 171571 171570 171569 171568 171567 171566 171565 171564 171563 171562 171561 171560 171559 171558 171557 171556 171555 171554 171553 171552 171551 171550 171549 171548 171547...