Submission #834283

#	Time	Username	Problem	Language	Result	Execution time	Memory
834283		Antekb	Street Lamps (APIO19_street_lamps)	C++17	20 / 100	5063 ms	2408 KiB

street_lamps

#include<bits/stdc++.h>
#define st first
#define nd second
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define eb emplace_back
#define pp pop_back
#define mp make_pair
using namespace std;
using pii = pair<int, int>;
using ll = long long;
using vi = vector<int>;
using vii = vector<pii>;
void debug(){cerr<<"\n";}
template<typename H, typename... T>
void debug(H h, T... t){
	cerr<<h;
	if(sizeof...(t)){
		cerr<<", ";
	}
	debug(t...);
}
#define deb(x...) cerr<<#x<<" = ";debug(x);

mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
const int N=1<<9;
int co[N][N];
int main(){
	int n, q;
	cin>>n>>q;
	string s;
	cin>>s;
	for(int i=0; i<n; i++){
		co[i][0]=(s[i]-'0');
	}
	for(int qq=1; qq<=q; qq++){
		for(int i=0; i<n; i++){
			co[i][qq]=co[i][qq-1];
		}
		cin>>s;
		if(s[0]=='q'){
			//deb(qq);
			int a, b;
			cin>>a>>b;
			a--;
			b--;
			int ans=0;
			for(int t=0; t<qq; t++){
				bool c=1;
				for(int i=a; i<b; i++){
					if(!co[i][t]){
						c=0;
						break;
					}
				}
				if(c)ans++;
			}
			cout<<ans<<"\n";
		}
		else{
			int v;
			cin>>v;
			v--;
			co[v][qq]^=1;
		}
	}
}

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