Submission #1037191

#	Time	Username	Problem	Language	Result	Execution time	Memory
1037191		modwwe	Street Lamps (APIO19_street_lamps)	C++17	0 / 100	382 ms	73684 KiB

street_lamps

//https://www.instagram.com/_modwwe/
#pragma GCC optimize("Ofast,unroll-loops")
//#pragma GCC target("avx2,bmi,bmi2")
#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
{
    int a,b,c,d,e,f;
};
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,r,mid,s5,s6,mx,s7,s8,s9,mx2,res,dem2=0,dem=0,l,s33;
int  i,s10,s12;
int kk;
int el=29;
main()
{
#ifndef ONLINE_JUDGE
//     fin(task),fou(task);
#endif
    NHP
    /// cin>>s1;
    //  modwwe
    phongbeo();
}
string s;
  struct BIT2D{
      ///https://hackmd.io/@socpite/rkM_5OWIn
      vector<int>bit[300002];
      vector<int> bit2[300002];
   void fake_up(int x,int y,int z)
    {
       for(x;x<=n;x+=x&-x)
                for(int y2=y;y2<=n;y2+=y2&-y2)
                bit[x].pb(y2);
    }

       void fake_get(int x,int y)
         { int ss=0;
              for(x;x;x-=x&-x)
                for(int y2=y;y2;y2-=y2&-y2)
                  bit[x].pb(y2);
         }
         void fake_upd(int x, int y, int u, int v, int val) {
    fake_up(x, y, val);
    fake_up(x, v + 1, -val);
    fake_up(u + 1, y, -val);
    fake_up(u + 1, v + 1, val);
}
void setup()
{
     for(int i=1;i<=n;i++){
 if(bit[i].size()!=0){
            bit[i].push_back(0);
      sort(bit[i].begin(),bit[i].end());
        bit[i].erase(unique(bit[i].begin(), bit[i].end()), bit[i].end());
 bit2[i].assign(bit[i].size(),0);}
     }

}
void up(int x,int y,int z)
    {
       for(x;x<=n;x+=x&-x)
                for(int y2=lower_bound(bit[x].begin(),bit[x].end(),y)-bit[x].begin();y2<bit[x].size();y2+=y2&-y2){
                /// cout<<y2<<"\n";
                bit2[x][y2]+=z;}
    }

       int get(int x,int y)
         { int ss=0;
              for(x;x;x-=x&-x)
                for(int y2=lower_bound(bit[x].begin(),bit[x].end(),y)-bit[x].begin();y2;y2-=y2&-y2)
                  ss+=bit2[x][y2];
                  return ss;
         }
         void upd(int x, int y, int u, int v, int val) {
    up(x, y, val);
    up(x, v + 1, -val);
    up(u + 1, y, -val);
    up(u + 1, v + 1, val);
}
}cd;
vector<icd>v;
set<int> ss;
void phongbeo()
 {
     cin>>n>>m;
      cin>>s;
       for(int i=0;i<n;i++)
        if(s[i]=='0')
         ss.insert(i+1);
         ss.insert(n+1);
  for(int i=1;i<=m;i++)
  {
       string ss2;
       cin>>ss2;
        if(ss2[0]=='t'){cin>>l;

        if(s[l-1]=='1')s[l-1]='0';else s[l-1]='1';
 if(s[l-1]=='0')ss.insert(l);
 else ss.erase(l);
    set<int>::iterator ss3 = ss.lower_bound(l);
    s3=*ss3;
    s3--;
    ss3++;
    s2=*ss3;
             if(s[l-1]=='0')
            cd.fake_upd(s2,l,l,s3,i),v.pb({s2,l,l,s3,i,0});
            else cd.fake_upd(s2,l,l,s3,-i),v.pb({s2,l,l,s3,-i,0});
        }
        else
        {
            cin>>l>>r;
            r--;
            cd.fake_get(l,r);
    set<int>::iterator ss3 = ss.lower_bound(l);
    s3=*ss3;
    if(s3>r)v.pb({l,r,i,0,0,1});
             else  v.pb({l,r,0,0,0,1});

        }
       }
     cd.setup();
      for(auto x:v)
        {
             if(x.f==0)
             {
                 cd.upd(x.a,x.b,x.c,x.d,x.e);
             }
             else
             {
                cout<<cd.get(x.a,x.b)+x.c,down
             }
        }
 }

Compilation message (stderr)

street_lamps.cpp:50:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   50 | main()
      | ^~~~
street_lamps.cpp: In member function 'void BIT2D::fake_up(int, int, int)':
street_lamps.cpp:67:12: warning: statement has no effect [-Wunused-value]
   67 |        for(x;x<=n;x+=x&-x)
      |            ^
street_lamps.cpp: In member function 'void BIT2D::fake_get(int, int)':
street_lamps.cpp:74:19: warning: statement has no effect [-Wunused-value]
   74 |               for(x;x;x-=x&-x)
      |                   ^
street_lamps.cpp:73:16: warning: unused variable 'ss' [-Wunused-variable]
   73 |          { int ss=0;
      |                ^~
street_lamps.cpp: In member function 'void BIT2D::up(int, int, int)':
street_lamps.cpp:97:12: warning: statement has no effect [-Wunused-value]
   97 |        for(x;x<=n;x+=x&-x)
      |            ^
street_lamps.cpp:98:88: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   98 |                 for(int y2=lower_bound(bit[x].begin(),bit[x].end(),y)-bit[x].begin();y2<bit[x].size();y2+=y2&-y2){
      |                                                                                      ~~^~~~~~~~~~~~~~
street_lamps.cpp: In member function 'int BIT2D::get(int, int)':
street_lamps.cpp:105:19: warning: statement has no effect [-Wunused-value]
  105 |               for(x;x;x-=x&-x)
      |                   ^
street_lamps.cpp:106:17: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  106 |                 for(int y2=lower_bound(bit[x].begin(),bit[x].end(),y)-bit[x].begin();y2;y2-=y2&-y2)
      |                 ^~~
street_lamps.cpp:108:19: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  108 |                   return ss;
      |                   ^~~~~~
street_lamps.cpp: In function 'void phongbeo()':
street_lamps.cpp:124:9: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  124 |         if(s[i]=='0')
      |         ^~
street_lamps.cpp:126:10: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
  126 |          ss.insert(n+1);
      |          ^~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20