View Code of Problem 3876

#include<bits/stdc++.h>
using namespace std;

typedef long long ll;

const int MAX = 5e6 + 10;
const ll INF = 1e18;

int n,q;
int mp[MAX];

int main()
{
    scanf("%d%d",&n,&q);
    while(q--){
        char op[10];
        int x;
        scanf("%s%d",op,&x);
        if(op[0]=='C'){
            mp[x]=!mp[x];
        }
        else{
            if(mp[x]){
                printf("True\n");
            }
            else{
                printf("False\n");
            }
        }
    }
    return 0;
}

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