Submission #1037165

#	Time	Username	Problem	Language	Result	Execution time	Memory
1037165		modwwe	Street Lamps (APIO19_street_lamps)	C++17	20 / 100	216 ms	8784 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;
};
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;
int t[100001];
void build(int node,int l,int r)
{
     if(l==r) { t[node]=s[l-1]-'0'; return; };
      int mid=l+r>>1;
    build(node<<1,l,mid);
    build(node<<1|1,mid+1,r);
     t[node]=t[node<<1]*t[node<<1|1];
}
void upd(int node,int l,int r,int l1)
{
     if(l==r) { t[node]=1-t[node]; return;}
      int mid=l+r>>1;
 if(l1<=mid) upd(node<<1,l,mid,l1);
  else upd(node<<1|1,mid+1,r,l1);
   t[node]=t[node<<1]*t[node<<1|1];
}
int get(int node,int l,int r,int l1,int r1)
   {
        if(l>r1||r<l1) return 1;
        if(l>=l1&&r<=r1) return t[node];
         int mid=l+r>>1;
          return get(node<<1,l,mid,l1,r1)*get(node<<1|1,mid+1,r,l1,r1);
   }
int bsl(int x)
 {
      int l=1;
      int r=x-1;
       while(l<=r)
       {
            int mid=l+r>>1;
              if(get(1,1,n,mid,x-1)==1) r=mid-1;
               else l=mid+1;
       }
       return r+1;
 }
 int bsr(int x)
  {
      int l=x+1;
        int r=n;
         while(l<=r)
         {
              int mid=l+r>>1;
               if(get(1,1,n,x+1,mid)==1) l=mid+1;
                else r=mid-1;
         }
          return l-1;
  }
  struct BIT2D{
      int bit[1001][1001];
   void 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][y2]+=z;
    }

       int get(int x,int y)
         { int ss=0;
              for(x;x;x-=x&-x)
                for(int y2=y;y2;y2-=y2&-y2)
                  ss+=bit[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;
void phongbeo()
 {
     cin>>n>>m;
      cin>>s;
       build(1,1,n);
  for(int i=1;i<=m;i++)
  {
       string ss2;
       cin>>ss2;
        if(ss2[0]=='t'){cin>>l;
         s2=bsl(l);
          s3=bsr(l);
        if(s[l-1]=='1')s[l-1]='0';else s[l-1]='1';
             if(s[l-1]=='0')
            cd.upd(s2,l,l,s3,i);
            else cd.upd(s2,l,l,s3,-i);
           upd(1,1,n,l);
        }
        else
        {
            cin>>l>>r;
            r--;
            //cout<<get(1,1,n,l,r),down
             if(get(1,1,n,l,r)==1)cout<<cd.get(l,r)+i;
             else  cout<<cd.get(l,r);
              down
        }
       }
 }

Compilation message (stderr)

street_lamps.cpp:49:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   49 | main()
      | ^~~~
street_lamps.cpp: In function 'void build(int, int, int)':
street_lamps.cpp:64:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   64 |       int mid=l+r>>1;
      |               ~^~
street_lamps.cpp: In function 'void upd(int, int, int, int)':
street_lamps.cpp:72:16: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   72 |       int mid=l+r>>1;
      |               ~^~
street_lamps.cpp: In function 'int get(int, int, int, int, int)':
street_lamps.cpp:81:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   81 |          int mid=l+r>>1;
      |                  ~^~
street_lamps.cpp: In function 'int bsl(int)':
street_lamps.cpp:90:22: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   90 |             int mid=l+r>>1;
      |                     ~^~
street_lamps.cpp: In function 'int bsr(int)':
street_lamps.cpp:102:24: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  102 |               int mid=l+r>>1;
      |                       ~^~
street_lamps.cpp: In member function 'void BIT2D::up(int, int, int)':
street_lamps.cpp:112:12: warning: statement has no effect [-Wunused-value]
  112 |        for(x;x<=n;x+=x&-x)
      |            ^
street_lamps.cpp: In member function 'int BIT2D::get(int, int)':
street_lamps.cpp:119:19: warning: statement has no effect [-Wunused-value]
  119 |               for(x;x;x-=x&-x)
      |                   ^
street_lamps.cpp:120:17: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  120 |                 for(int y2=y;y2;y2-=y2&-y2)
      |                 ^~~
street_lamps.cpp:122:19: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  122 |                   return ss;
      |                   ^~~~~~

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