이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
//https://www.instagram.com/_modwwe/
#pragma GCC optimize("Ofast,unroll-loops")
#include<bits/stdc++.h>
#define int long long
//#define ll long long
#define down cout<<'\n';
#define debug cout<<" cucuucucuuu",down
#define NHP ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
#define modwwe int t;cin>>t; while(t--)
#define bit(i,j) (i>>j&1)
#define sobit(a) __builtin_popcountll(a)
#define task "test"
#define fin(x) freopen(x".inp","r",stdin)
#define fou(x) freopen(x".ans","w",stdout)
#define pb push_back
#define checktime cerr << (double)clock() / CLOCKS_PER_SEC * 1000 << " ms";
using namespace std;
void phongbeo();
const int inf=1e9;
const int mod2=1e9+7;
const int mod1=998244353;
struct icd
{
long double a;
int b;
};
struct ib
{
int a;
int b;
};
struct ic
{
int a,b,c;
};
struct id
{
int a,b,c,d;
};
struct ie
{
int a,b,c,d,e;
};
int n,m,s1,s2,s4,s3,sf,k,s5,s6,mx,s7,s8,s9,mx2,res,dem2=0,dem=0,s33,dem3,l,r,mid;
int i,s10,s12;
int kk;
int el=29;
main()
{
#ifndef ONLINE_JUDGE
//fin(task),fou(task);
#endif
NHP
/// cin>>s1;
// modwwe
phongbeo();
}
ic mer(ic a,ic b)
{
return {a.a+b.a,a.b+b.b,a.c+b.c};
}
vector<int> v;
struct IT
{
ic t[4000001];
int t2[4000001];
int t3[4000001];
void build(int node,int l,int r)
{
t2[node]=1;
t3[node]=0;
t[node]={0,0,0};
if(l==r) return;
int mid=l+r>>1;
build(node<<1,l,mid);
build(node<<1|1,mid+1,r);
}
void ff(int x)
{
for(int i=x*2; i<=x*2+1; i++)
{
if(t2[i]==0) continue;
t[i].c*=t2[x];
t[i].c%=mod2;
t[i].a=t[i].a-t3[x]*t[i].b+t[i].c;
t[i].b=t[i].b*t2[x];
t3[i]+=t3[x]*t2[i];
t2[i]*=t2[x];
t[i].a%=mod2;
t[i].b%=mod2;
t2[i]%=mod2;
}
t2[x]=1;
t3[x]=0;
}
void upd5(int node,int l,int r,int l1,int r1,int x)
{
if(l>r1||r<l1||t2[node]==0)
return;
if(l>=l1&&r<=r1)
{
t2[node]=t2[node]*2%mod2;
t3[node]+=x;
t3[node]%=mod2;
t[node].c=t[node].c*2%mod2;
t[node].a=t[node].a*2;
t[node].a=t[node].a-x*t[node].b+t[node].c;
t[node].a%=mod2;
t[node].b=t[node].b*2%mod2;
return;
}
if(t3[node]!=0) ff(node);
int mid=l+r>>1;
upd5(node<<1,l,mid,l1,r1,x);
upd5(node<<1|1,mid+1,r,l1,r1,x);
t[node]=mer(t[node<<1],t[node<<1|1]);
}
void upd(int node,int l,int r,int l1,int r1,int x)
{
if(l>r1||r<l1||t2[node]==0)
return;
if(l>=l1&&r<=r1)
{
t2[node]=t2[node]*2%mod2;
t3[node]+=x;
t3[node]%=mod2;
t[node].c=t[node].c*2%mod2;
t[node].a=t[node].a*2;
t[node].a=t[node].a-x*t[node].b+t[node].c;
t[node].a%=mod2;
t[node].b=t[node].b*2%mod2;
return;
}
if(t3[node]!=0) ff(node);
int mid=l+r>>1;
upd(node<<1,l,mid,l1,r1,x);
upd(node<<1|1,mid+1,r,l1,r1,x);
t[node]=mer(t[node<<1],t[node<<1|1]);
}
void upd4(int node,int l,int r,int l1,int r1,int x)
{
if(l>r1||r<l1||t2[node]==0)return;
if(l>=l1&&r<=r1)
{
t[node].a=t[node].a+t[node].c-x*t[node].b;
t[node].a%=mod2;
t3[node]+=x;
t3[node]%=mod2;
return;
}
if(t3[node]!=0) ff(node);
int mid=l+r>>1;
upd4(node<<1,l,mid,l1,r1,x);
upd4(node<<1|1,mid+1,r,l1,r1,x);
t[node]=mer(t[node<<1],t[node<<1|1]);
}
void upd2(int node,int l,int r,int l1,ib x)
{
if(t2[node]==0) return;
if(l==r)
{
t[node].a+=x.a;
t[node].c+=x.b*v[l-1];
t[node].b+=x.b;
return;
}
if(t3[node]!=0) ff(node);
int mid=l+r>>1;
if(l1<=mid)upd2(node<<1,l,mid,l1,x);
else upd2(node<<1|1,mid+1,r,l1,x);
t[node]=mer(t[node<<1],t[node<<1|1]);
}
void upd3(int node,int l,int r,int l1,int r1)
{
if(l>r1||r<l1||t2[node]==0) return;
if(l>=l1&&r<=r1)
{
t2[i]=0;
t[node]= {0,0,0};
return;
}
int mid=l+r>>1;
if(t3[node]!=0) ff(node);
upd3(node<<1,l,mid,l1,r1);
upd3(node<<1|1,mid+1,r,l1,r1);
t[node]=mer(t[node<<1],t[node<<1|1]);
}
ic get(int node,int l,int r,int l1,int r1)
{
if(l>r1||r<l1||t2[node]==0) return{0,0,0};
if(l>=l1&&r<=r1)return t[node];
if(t3[node]!=0) ff(node);
int mid=l+r>>1;
return mer(get(node<<1,l,mid,l1,r1),get(node<<1|1,mid+1,r,l1,r1));
}
}st;
ib a[500001];
struct cc{
ic a,b;
}c[500001];
void phongbeo()
{
cin>>n;
for(int i=1; i<=n; i++)
cin>>a[i].a,v.pb(a[i].a);
for(int i=1; i<=n; i++)
cin>>a[i].b,v.pb(a[i].b);
sort(v.begin(),v.end());
v.erase(unique(v.begin(), v.end()), v.end());
m=v.size();
for(int i=1;i<=n;i++)
{
if(a[i].a>a[i].b) swap(a[i].a,a[i].b);
a[i].a=lower_bound(v.begin(),v.end(),a[i].a)-v.begin()+1;
a[i].b=lower_bound(v.begin(),v.end(),a[i].b)-v.begin()+1;
}
st.build(1,1,m);
st.upd2(1,1,m,a[n].a,{0,1});
st.upd2(1,1,m,a[n].b,{0,1});
c[n].a.b=1;
c[n].b.b=1;
for(int i=n-1;i>=1;--i)
{
ic x=st.get(1,1,m,1,a[i].a-1);
ic x2=st.get(1,1,m,1,a[i].b-1);
c[i].a=x;
c[i].b=x2;
st.upd3(1,1,m,1,a[i].a-1);
st.upd4(1,1,m,a[i].a,a[i].b-1,v[a[i].a-1]);
st.upd(1,1,m,a[i].b,m,v[a[i].a-1]+v[a[i].b-1]);
st.upd2(1,1,m,a[i].a,{x.a,x.b});
st.upd2(1,1,m,a[i].b,{x2.a,x2.b});
}
st.build(1,1,m);
for(int i=0;i<=n-1;i++)
{
if(i==0)s4=(s4+c[1].a.a+c[1].b.a)%mod2;
else
{
if(i==1){st.upd2(1,1,m,a[1].a,{0,1});
st.upd2(1,1,m,a[1].b,{0,1});
}
else
{
ic x=st.get(1,1,m,1,a[i].a-1);
ic x2=st.get(1,1,m,1,a[i].b-1);
st.upd3(1,1,m,1,a[i].a-1);
st.upd4(1,1,m,a[i].a,a[i].b-1,v[a[i].a-1]);
st.upd(1,1,m,a[i].b,m,v[a[i].a-1]+v[a[i].b-1]);
st.upd2(1,1,m,a[i].a,{x.a,x.b});
st.upd2(1,1,m,a[i].b,{x2.a,x2.b});
}
ic x=st.get(1,1,m,a[i].a,a[i].a);
ic x2=st.get(1,1,m,a[i].b,a[i].b);
if(a[i+1].a>=a[i].a)
{
s4=(s4+c[i+1].a.a*x.b+x.a*c[i+1].a.b)%mod2;
}
if(a[i+1].b>=a[i].a)
{
s4=(s4+c[i+1].b.a*x.b+x.a*c[i+1].b.b)%mod2;
}
if(a[i+1].a>=a[i].b)
{
s4=(s4+c[i+1].a.a*x2.b+x2.a*c[i+1].a.b)%mod2;
}
if(a[i+1].b>=a[i].b)
{
s4=(s4+c[i+1].b.a*x2.b+x2.a*c[i+1].b.b)%mod2;
}
}
}
cout<<s4;
}
컴파일 시 표준 에러 (stderr) 메시지
Main.cpp:51:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
51 | main()
| ^~~~
Main.cpp: In member function 'void IT::build(long long int, long long int, long long int)':
Main.cpp:77:10: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
77 | int mid=l+r>>1;
| ~^~
Main.cpp: In member function 'void IT::upd5(long long int, long long int, long long int, long long int, long long int, long long int)':
Main.cpp:117:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
117 | int mid=l+r>>1;
| ~^~
Main.cpp: In member function 'void IT::upd(long long int, long long int, long long int, long long int, long long int, long long int)':
Main.cpp:139:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
139 | int mid=l+r>>1;
| ~^~
Main.cpp: In member function 'void IT::upd4(long long int, long long int, long long int, long long int, long long int, long long int)':
Main.cpp:156:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
156 | int mid=l+r>>1;
| ~^~
Main.cpp: In member function 'void IT::upd2(long long int, long long int, long long int, long long int, ib)':
Main.cpp:172:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
172 | int mid=l+r>>1;
| ~^~
Main.cpp: In member function 'void IT::upd3(long long int, long long int, long long int, long long int, long long int)':
Main.cpp:187:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
187 | int mid=l+r>>1;
| ~^~
Main.cpp: In member function 'ic IT::get(long long int, long long int, long long int, long long int, long long int)':
Main.cpp:198:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
198 | int mid=l+r>>1;
| ~^~
Main.cpp: In function 'void phongbeo()':
Main.cpp:211:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
211 | for(int i=1; i<=n; i++)
| ^~~
Main.cpp:213:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
213 | sort(v.begin(),v.end());
| ^~~~
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