Submission #865876

#	Time	Username	Problem	Language	Result	Execution time	Memory
865876		jk410	Street Lamps (APIO19_street_lamps)	C++17	20 / 100	263 ms	524288 KiB

street_lamps

#include <iostream>
using namespace std;
int N,Q;
string S;
bool A[101][101];
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>N>>Q>>S;
    for (int i=1; i<=N; i++)
        A[0][i]=(S[i-1]=='1');
    for (int t=1; t<=Q; t++){
        for (int i=1; i<=N; i++)
            A[t][i]=A[t-1][i];
        string s;
        cin>>s;
        if (s[0]=='t'){
            int x;
            cin>>x;
            A[t][x]^=true;
        }
        else{
            int l,r;
            cin>>l>>r;
            int cnt=0;
            for (int i=0; i<t; i++){
                bool flag=true;
                for (int j=l; j<r; j++)
                    flag&=A[i][j];
                cnt+=flag;
            }
            cout<<cnt<<"\n";
        }
    }
    return 0;
}

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