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답안 #311084

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
311084 2020-10-09T08:37:50 Z rrrr10000 가로등 (APIO19_street_lamps) C++14
100 / 100
 4696 ms 524288 KB 
#include <bits/stdc++.h>
#pragma GCC target("avx")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
using namespace std;
#define rep(i, n)  for(long long i=0;i<(long long)(n);i++)
#define REP(i,k,n) for(long long i=k;i<(long long)(n);i++)
#define all(a) a.begin(),a.end()
#define pb emplace_back
#define eb emplace_back
#define lb(v,k) (lower_bound(all(v),k)-v.begin())
#define ub(v,k) (upper_bound(all(v),k)-v.begin())
#define fi first
#define se second
#define pi M_PI
#define PQ(T) priority_queue<T>
#define SPQ(T) priority_queue<T,vector<T>,greater<T>>
#define dame(a) {out(a);return 0;}
#define decimal cout<<fixed<<setprecision(15);
#define dupli(a) {sort(all(a));a.erase(unique(all(a)),a.end());}
typedef long long ll;
typedef pair<int,int> P;
typedef tuple<ll,ll,ll> PP;
typedef tuple<ll,ll,ll,ll> PPP;
typedef multiset<ll> S;
using vi=vector<ll>;
using vvi=vector<vi>;
using vvvi=vector<vvi>;
using vvvvi=vector<vvvi>;
using vp=vector<P>;
using vvp=vector<vp>;
using vb=vector<bool>;
using vvb=vector<vb>;
const ll inf=1001001001001001001;
const ll INF=1001001001;
const ll mod=1000000007;
const double eps=1e-10;
template<class T> bool chmin(T&a,T b){if(a>b){a=b;return true;}return false;}
template<class T> bool chmax(T&a,T b){if(a<b){a=b;return true;}return false;}
template<class T> void out(T a){cout<<a<<'\n';}
template<class T> void outp(T a){cout<<'('<<a.fi<<','<<a.se<<')'<<'\n';}
template<class T> void outvp(T v){rep(i,v.size())cout<<'('<<v[i].fi<<','<<v[i].se<<')';cout<<'\n';}
template<class T> void outvvp(T v){rep(i,v.size())outvp(v[i]);}
template<class T> void outv(T v){rep(i,v.size()){if(i)cout<<' ';cout<<v[i];}cout<<'\n';}
template<class T> void outvv(T v){rep(i,v.size())outv(v[i]);}
template<class T> bool isin(T x,T l,T r){return (l)<=(x)&&(x)<=(r);}
template<class T> void yesno(T b){if(b)out("yes");else out("no");}
template<class T> void YesNo(T b){if(b)out("Yes");else out("No");}
template<class T> void YESNO(T b){if(b)out("YES");else out("NO");}
template<class T> void noyes(T b){if(b)out("no");else out("yes");}
template<class T> void NoYes(T b){if(b)out("No");else out("Yes");}
template<class T> void NOYES(T b){if(b)out("NO");else out("YES");}
void outs(ll a,ll b){if(a>=inf-100)out(b);else out(a);}
ll gcd(ll a,ll b){if(b==0)return a;return gcd(b,a%b);}
ll modpow(ll a,ll b){ll res=1;a%=mod;while(b){if(b&1)res=res*a%mod;a=a*a%mod;b>>=1;}return res;}
vvp casc,id;
vvi seg;
vi NN;
ll N;
void initseg(){
    NN=vi(N*2-1,1);
    rep(t,N*2-1){
        while(NN[t]<casc[t].size())NN[t]<<=1;
        seg.pb(vi(NN[t]*2-1));
    }
}
void add(ll t,ll i,ll x){
    i=NN[t]+i-1;
    seg[t][i]+=x;
    while(i>0){
        i=(i-1)/2;
        seg[t][i]=seg[t][i*2+1]+seg[t][i*2+2];
    }
}
ll getsum(ll t,ll a,ll b,ll k,ll l,ll r){
    if(r<=a||b<=l)return 0;
    if(a<=l&&r<=b)return seg[t][k];
    ll c1=getsum(t,a,b,k*2+1,l,(l+r)/2);
    ll c2=getsum(t,a,b,k*2+2,(l+r)/2,r);
    return c1+c2;
}
vector<PP> points;
void init_fractional_cascading(){  //(x座標,y座標,id)
    N=1;
    while(N<points.size())N<<=1;
    while(points.size()<N)points.pb(0,0,points.size());sort(all(points));
    casc=vvp(2*N-1);id=vvp(N);
    rep(i,N)casc[i+N-1].pb(get<1>(points[i]),get<2>(points[i]));
    for(int i=N-2;i>=0;i--){
        ll a=0,b=0;
        while(true){
            bool A=(a==casc[i*2+1].size()),B=(b==casc[i*2+2].size());
            if(A&&B)break;
            if(A)casc[i].pb(casc[i*2+2][b++]);
            else if(B)casc[i].pb(casc[i*2+1][a++]);
            else if(casc[i*2+1][a]>casc[i*2+2][b])casc[i].pb(casc[i*2+2][b++]);
            else casc[i].pb(casc[i*2+1][a++]);
        }
    }
    rep(i,2*N-1)rep(j,casc[i].size())id[casc[i][j].se].pb(i,j);
}
ll answer_query(int i){
    ll res=0;
    for(auto x:id[i])res+=getsum(x.fi,0,x.se+1,0,0,NN[x.fi]);
    return res;
}
void add_all(int x1,int x2,int y1,int y2,int k,int l,int r,ll x){//[x1,x2],[y1,y2],[l,r)
    if(x2<get<0>(points[l])||get<0>(points[r-1])<x1)return;
    if(x1<=get<0>(points[l])&&get<0>(points[r-1])<=x2){
        ll a=lb(casc[k],P(y1,-inf)),b=lb(casc[k],P(y2,inf));  //[a,b)+=x
        if(a!=casc[k].size())add(k,a,x);
        if(b!=casc[k].size())add(k,b,-x);
        return;
    }
    add_all(x1,x2,y1,y2,k*2+1,l,(l+r)/2,x);
    add_all(x1,x2,y1,y2,k*2+2,(l+r)/2,r,x);
}
int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    ll n,q;cin>>n>>q;
    string str;cin>>str;
    vp query(q);
    ll cnt=0;
    rep(i,q){
        string t;cin>>t;
        if(t=="query"){
            ll a,b;cin>>a>>b;
            query[i]=P(a-1,b-2);
            points.pb(a-1,b-2,cnt++);
        }
        else{
            ll a;cin>>a;
            query[i]=P(-1,a-1);
        }
    }
    init_fractional_cascading();
    initseg();
    set<ll> S;rep(i,n)if(str[i]=='0')S.insert(i);
    cnt=0;
    rep(i,q){
        if(query[i].fi==-1){
            ll ID=query[i].se;
            if(str[ID]=='0')S.erase(ID);
            auto itr=S.lower_bound(ID);
            ll a=0,b=n-1;
            if(itr!=S.begin()){
                itr--;a=(*itr)+1;itr++;
            }
            if(itr!=S.end())b=(*itr)-1;
            if(str[ID]=='0')add_all(a,ID,ID,b,0,0,N,-(i+1));
            else add_all(a,ID,ID,b,0,0,N,i+1);
            if(str[ID]=='1')S.insert(ID);
            str[ID]='1'+'0'-str[ID];
        }
        else{
            ll res=answer_query(cnt++);
            auto itr=S.lower_bound(query[i].fi);
            if(itr==S.end()||*itr>query[i].se)res+=i+1;
            out(res);
        }
    }
}

Compilation message

street_lamps.cpp: In function 'void initseg()':
street_lamps.cpp:63:20: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<long long int>, long long int>::value_type' {aka 'long long int'} and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |         while(NN[t]<casc[t].size())NN[t]<<=1;
street_lamps.cpp: In function 'void init_fractional_cascading()':
street_lamps.cpp:85:12: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::tuple<long long int, long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   85 |     while(N<points.size())N<<=1;
      |           ~^~~~~~~~~~~~~~
street_lamps.cpp:86:24: warning: comparison of integer expressions of different signedness: 'std::vector<std::tuple<long long int, long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
   86 |     while(points.size()<N)points.pb(0,0,points.size());sort(all(points));
      |           ~~~~~~~~~~~~~^~
street_lamps.cpp:86:5: warning: this 'while' clause does not guard... [-Wmisleading-indentation]
   86 |     while(points.size()<N)points.pb(0,0,points.size());sort(all(points));
      |     ^~~~~
street_lamps.cpp:86:56: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'while'
   86 |     while(points.size()<N)points.pb(0,0,points.size());sort(all(points));
      |                                                        ^~~~
street_lamps.cpp:92:22: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   92 |             bool A=(a==casc[i*2+1].size()),B=(b==casc[i*2+2].size());
      |                     ~^~~~~~~~~~~~~~~~~~~~
street_lamps.cpp:92:48: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   92 |             bool A=(a==casc[i*2+1].size()),B=(b==casc[i*2+2].size());
      |                                               ~^~~~~~~~~~~~~~~~~~~~
street_lamps.cpp: In function 'void add_all(int, int, int, int, int, int, int, ll)':
street_lamps.cpp:111:13: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  111 |         if(a!=casc[k].size())add(k,a,x);
      |            ~^~~~~~~~~~~~~~~~
street_lamps.cpp:112:13: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  112 |         if(b!=casc[k].size())add(k,b,-x);
      |            ~^~~~~~~~~~~~~~~~

Subtask #1
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1857 ms 251280 KB Output is correct
2 Correct 2183 ms 251656 KB Output is correct
3 Correct 2213 ms 252120 KB Output is correct
4 Correct 2228 ms 260384 KB Output is correct
5 Correct 2438 ms 259432 KB Output is correct
6 Correct 1545 ms 134704 KB Output is correct
7 Correct 4230 ms 524288 KB Output is correct
8 Correct 3847 ms 511792 KB Output is correct

Subtask #3
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 2 ms 640 KB Output is correct
3 Correct 3 ms 1024 KB Output is correct
4 Correct 3 ms 1024 KB Output is correct
5 Correct 518 ms 23992 KB Output is correct
6 Correct 1499 ms 136952 KB Output is correct
7 Correct 2573 ms 258236 KB Output is correct
8 Correct 4078 ms 510964 KB Output is correct
9 Correct 1685 ms 249680 KB Output is correct
10 Correct 2453 ms 506644 KB Output is correct
11 Correct 2321 ms 506792 KB Output is correct
12 Correct 4449 ms 523724 KB Output is correct
13 Correct 4077 ms 510836 KB Output is correct

Subtask #4
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 1024 KB Output is correct
2 Correct 3 ms 1024 KB Output is correct
3 Correct 2 ms 640 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 4305 ms 516564 KB Output is correct
6 Correct 2760 ms 259672 KB Output is correct
7 Correct 1676 ms 134392 KB Output is correct
8 Correct 486 ms 17036 KB Output is correct
9 Correct 1380 ms 125080 KB Output is correct
10 Correct 350 ms 11252 KB Output is correct
11 Correct 1445 ms 125152 KB Output is correct
12 Correct 337 ms 11252 KB Output is correct
13 Correct 1483 ms 125196 KB Output is correct
14 Correct 368 ms 11380 KB Output is correct
15 Correct 4696 ms 523644 KB Output is correct
16 Correct 4269 ms 511020 KB Output is correct

Subtask #5
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1857 ms 251280 KB Output is correct
9 Correct 2183 ms 251656 KB Output is correct
10 Correct 2213 ms 252120 KB Output is correct
11 Correct 2228 ms 260384 KB Output is correct
12 Correct 2438 ms 259432 KB Output is correct
13 Correct 1545 ms 134704 KB Output is correct
14 Correct 4230 ms 524288 KB Output is correct
15 Correct 3847 ms 511792 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 2 ms 640 KB Output is correct
18 Correct 3 ms 1024 KB Output is correct
19 Correct 3 ms 1024 KB Output is correct
20 Correct 518 ms 23992 KB Output is correct
21 Correct 1499 ms 136952 KB Output is correct
22 Correct 2573 ms 258236 KB Output is correct
23 Correct 4078 ms 510964 KB Output is correct
24 Correct 1685 ms 249680 KB Output is correct
25 Correct 2453 ms 506644 KB Output is correct
26 Correct 2321 ms 506792 KB Output is correct
27 Correct 4449 ms 523724 KB Output is correct
28 Correct 4077 ms 510836 KB Output is correct
29 Correct 3 ms 1024 KB Output is correct
30 Correct 3 ms 1024 KB Output is correct
31 Correct 2 ms 640 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 4305 ms 516564 KB Output is correct
34 Correct 2760 ms 259672 KB Output is correct
35 Correct 1676 ms 134392 KB Output is correct
36 Correct 486 ms 17036 KB Output is correct
37 Correct 1380 ms 125080 KB Output is correct
38 Correct 350 ms 11252 KB Output is correct
39 Correct 1445 ms 125152 KB Output is correct
40 Correct 337 ms 11252 KB Output is correct
41 Correct 1483 ms 125196 KB Output is correct
42 Correct 368 ms 11380 KB Output is correct
43 Correct 4696 ms 523644 KB Output is correct
44 Correct 4269 ms 511020 KB Output is correct
45 Correct 975 ms 123528 KB Output is correct
46 Correct 1346 ms 123184 KB Output is correct
47 Correct 1306 ms 126496 KB Output is correct
48 Correct 2480 ms 259540 KB Output is correct
49 Correct 2729 ms 506964 KB Output is correct
50 Correct 2803 ms 507068 KB Output is correct
51 Correct 2693 ms 506788 KB Output is correct
52 Correct 2157 ms 507308 KB Output is correct
53 Correct 2171 ms 507248 KB Output is correct
54 Correct 2155 ms 507108 KB Output is correct