Submission #17878

#	Time	Username	Problem	Language	Result	Execution time	Memory
17878		Adilkhan	Collider (IZhO11_collider)	C++98	100 / 100	155 ms	4136 KiB

collider

#include <bits/stdc++.h>

#define pb push_back
#define endl "\n"
#define mp make_pair 
#define fi first
#define se second
#define all(x) x.begin(), x.end()
#define fname ""
#define sz(x) (int)(x.size())

typedef long long ll;

using namespace std;

const ll N = (ll)(5e5) + 322;
const ll INF = (ll)(1e9);
const ll mod = (ll)(1e9) + 7;
const double eps = 1e-9;

string s;
int n, k, x, y, id;
vector <pair <int, int> > v; 
char type;

int main () {
	ios_base :: sync_with_stdio (false);// cin.tie(0);
//	freopen(fname".in", "r", stdin);
//	freopen(fname".out", "w", stdout);
	cin >> n >> k >> s;
	for (int i = 1; i <= k; ++i) {
		cin >> type;
		if (type == 'a') {
			cin >> x >> y;
			v.pb(mp(x, y));
		}else {
			cin >> id;
			for (int j = sz(v) - 1; j >= 0; --j) {
				if (v[j].se == id) {id = v[j].fi; continue;}
				if (v[j].se < id) id--;
				if (v[j].fi <= id) id++;	
			}
			cout << s[id - 1] << endl;
		}		
	}
	return 0;
}

• Subtask 1: 100 / 100