比赛 |
EYOI与SBOI开学欢乐赛14th |
评测结果 |
AAAAAATTTT |
题目名称 |
逆元数列 |
最终得分 |
60 |
用户昵称 |
yrtiop |
运行时间 |
4.492 s |
代码语言 |
C++ |
内存使用 |
5.27 MiB |
提交时间 |
2022-10-24 22:03:51 |
显示代码纯文本
#include <bits/stdc++.h>
#define Chtholly std::set<node>::iterator
typedef long long ll;
const int maxn = 1e5 + 5;
struct node {
int l,r;
mutable bool v;
node() {
l = r = 0;
v = false;
}
node(int l,int r = 0,bool v = false):l(l),r(r),v(v){}
bool operator < (const node& p)const {
return l < p.l;
}
};
std::set<node> s;
Chtholly split(int pos) {
Chtholly it = s.lower_bound(node(pos));
if(it != s.end()&&it -> l == pos)return it;
-- it;
if(it -> r < pos)return s.end();
int l = it -> l,r = it -> r;
bool v = it -> v;
s.erase(it);
s.insert(node(l , pos - 1 , v));
return s.insert(node(pos , r , v)).first;
}
void assign(int l,int r) {
Chtholly itr = split(r + 1),itl = split(l);
for(;itl != itr;++ itl)
itl -> v ^= true;
return ;
}
ll p,a[maxn],b[maxn],sum[maxn],cnt[maxn];
int n,m,t;
ll query(int l,int r) {
Chtholly itr = split(r + 1),itl = split(l);
ll ans = 0;
for(;itl != itr;++ itl) {
if(itl -> v)ans += cnt[itl -> r] - cnt[itl -> l - 1];
else ans += sum[itl -> r] - sum[itl -> l - 1];
}
return ans;
}
ll power(ll x,ll y) {
ll ans = 1;
for(;y;y >>= 1) {
if(y & 1)(ans *= x) %= p;
(x *= x) %= p;
}
return ans;
}
void build() {
for(node k : s) {
if(!k.v)continue ;
int l = k.l,r = k.r;
for(int i = l;i <= r;++ i)
std::swap(a[i] , b[i]);
}
for(int i = 1;i <= n;++ i) {
sum[i] = sum[i - 1] + a[i];
cnt[i] = cnt[i - 1] + b[i];
}
s.clear();
s.insert(node(1 , n , false));
return ;
}
int main() {
freopen("invarray.in","r",stdin);
freopen("invarray.out","w",stdout);
scanf("%d %d %lld",&n,&m,&p);
s.insert(node(1 , n , false));
for(int i = 1;i <= n;++ i) {
scanf("%lld",&a[i]);
b[i] = power(a[i] , p - 2);
sum[i] = sum[i - 1] + a[i];
cnt[i] = cnt[i - 1] + b[i];
}
t = 380;
for(int i = 1;i <= m;++ i) {
int op,l,r;
scanf("%d %d %d",&op,&l,&r);
if(op == 1) {
assign(l , r);
}
else {
printf("%lld\n",query(l , r));
}
if((int)s.size() >= t)build();
}
return 0;
}