Submission #136667

#	Time	Username	Problem	Language	Result	Execution time	Memory
136667		KLPP	Street Lamps (APIO19_street_lamps)	C++14	20 / 100	5006 ms	524292 KiB

street_lamps

#include<bits/stdc++.h>

using namespace std;
typedef long long int lld;
#define rep(i,a,b) for(int i=a;i<b;i++)
#define trav(a,v) for(auto a:v)

int main(){
  int n,q;
  cin>>n>>q;
  string state;
  cin>>state;
  vector<string> V;
  V.push_back(state);
  while(q--){
    string type;
    cin>>type;
    if(type=="query"){
      int x,y;
      cin>>x>>y;
      x--;
      y-=2;
      int ans=0;
      trav(a,V){
	bool b=true;
	rep(i,x,y+1){
	  if(a[i]=='0')b=false;
	}
	ans+=b;
	//cout<<a<<" "<<a[x]<<endl;
      }
      cout<<ans<<endl;
    }else{
      int x;
      cin>>x;
      x--;
      state[x]='0'+'1'-state[x];
    }
    V.push_back(state);
  }
  return 0;
}

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