Submission #396592

#	Time	Username	Problem	Language	Result	Execution time	Memory
396592		mosiashvililuka	Street Lamps (APIO19_street_lamps)	C++14	40 / 100	604 ms	23892 KiB

street_lamps

#include<bits/stdc++.h>
using namespace std;
int a,b,c,d,e,i,j,ii,jj,zx,xc,tes,t,f[300009],pas,sub2,fx[300009],fx2[300009],ans[300009];
pair <string, pair <int, int> > p[300009];
string S;
int els(int q){
	if(q==0) return 1; else return 0;
}
int main(){
	ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
	cin>>a>>tes;
	cin>>S;
	S.insert(0,"0");
	p[0].first="W";
	for(i=1; i<=a; i++){
		f[i]=S[i]-'0';
	}
	a++;
	for(t=1; t<=tes; t++){
		cin>>p[t].first;
		if(p[t].first[0]=='q'){
			cin>>p[t].second.first>>p[t].second.second;
		}else{
			cin>>p[t].second.first;
		}
	}
	
	sub2=0;
	for(t=1; t<=tes; t++){
		if(p[t].first[0]=='q'){
			if(p[t].second.second!=p[t].second.first+1){
				sub2=1;
				break;
			}
		}
	}
	if(sub2==0){
		for(i=1; i<=a; i++){
			if(f[i]==1){
				fx[i]=0;
				fx2[i]=1;
			}
		}
		for(t=1; t<=tes; t++){
			if(p[t].first[0]=='t'){
				c=p[t].second.first;
				if(fx2[c]==0){
					fx[c]=t;
					fx2[c]=1;
				}else{
					ans[c]+=t-fx[c];
					fx2[c]=0;
				}
			}else{
				c=p[t].second.first;
				if(fx2[c]==0){
					cout<<ans[p[t].second.first]<<endl;
				}else{
					cout<<ans[p[t].second.first]+t-fx[c]<<endl;
				}
			}
		}
		return 0;
	}
	
	if(a<=102&&tes<=102){
		for(i=1; i<=tes; i++){
			if(p[i].first[0]=='t'){
				f[p[i].second.first]=els(f[p[i].second.first]);
				continue;
			}
			pas=0;
			for(ii=i-1; ii>=0; ii--){
				for(j=p[i].second.first; j<p[i].second.second; j++){
					if(f[j]==0) break;
				}
				if(j==p[i].second.second){
					pas++;
				}
				if(p[ii].first[0]=='t'){
					f[p[ii].second.first]=els(f[p[ii].second.first]);
				}
			}
			for(ii=1; ii<=i-1; ii++){
				if(p[ii].first[0]=='t'){
					f[p[ii].second.first]=els(f[p[ii].second.first]);
				}
			}
			cout<<pas<<endl;
		}
		exit(0);
	}

	return 0;
}

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