#include "bits/stdc++.h"
using namespace std;
#define ar array
namespace sub1{
void solve(int n, int q){
vector<string> s(q + 1);
cin>>s[0];
for(int i=1;i<=q;i++){
s[i] = s[i-1];
string t; cin>>t;
if(t == "query"){
int l, r; cin>>l>>r;
--l, --r;
int res = 0;
for(int j=0;j<i;j++){ bool ok = 1;
for(int k=l;k<r;k++){
if(s[j][k] == '0') ok = 0;
} res += ok;
}
cout<<res<<"\n";
} else {
int p; cin>>p; p--;
s[i][p] = '1' - s[i][p] + '0';
}
}
}
};
namespace sub2{
void solve(int n, int q, string& s, vector<ar<int, 3>>& qq){
vector<int> sum(n);
for(int i=0;i<q;i++){
if(qq[i][0]){
int p = --qq[i][1];
if(s[p] == '0') sum[p] -= i, s[p] = '1';
else sum[p] += i, s[p] = '0';
} else {
int p = --qq[i][1];
cout<<sum[p] + (s[i] == '1') * i<<"\n";
}
}
}
};
namespace sub3{
void solve(int n, int q, string& s, vector<ar<int, 3>>& qq){
}
};
signed main(){
ios::sync_with_stdio(0); cin.tie(0);
int n, q; cin>>n>>q;
if(n <= 100 && q <= 100){
sub1::solve(n, q);
} else {
string s; cin>>s;
bool is = 1;
vector<ar<int, 3>> qq(q);
for(int i=0;i<q;i++){
string t; cin>>t;
if(t == "query"){
cin>>qq[i][1]>>qq[i][2];
if(qq[i][2] - qq[i][1] != 1) is = 0;
} else { qq[i][0] = 1;
cin>>qq[i][1];
}
}
if(is){
sub2::solve(n, q, s, qq);
} else {
sub3::solve(n, q, s, qq);
}
}
}
