Submission #922420

#	Time	Username	Problem	Language	Result	Execution time	Memory
922420		thunopro	Collider (IZhO11_collider)	C++14	100 / 100	261 ms	2644 KiB

collider

#include <bits/stdc++.h>
using namespace std;
#define ios ios::sync_with_stdio(false); cin.tie(NULL);
#define pb push_back
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define fr first
#define sc second
#define int long long
#define endl '\n'
void fopn(string name){
	freopen((name+".in").c_str(),"r",stdin);
	freopen((name+".out").c_str(),"w",stdout);
}
const int INF=1e18,mod=998244353;
int n,q;
const int N=1e5+5;
void solve(){
	int n,q;cin>>n>>q;
	vector<char> v(n);;
	for(int i=0;i<n;i++) cin>>v[i];
	while(q--){
		char t; cin>>t;
		if(t=='a'){
			int a,b;cin>>a>>b;
			a--,b--;
			char val=v[a];
			v.erase(v.begin()+a);
			v.insert(v.begin()+b,val);
		}
		else{
			int x;cin>>x;
			cout<<v[x-1]<<endl;
		}
	}
}
main(){
	//fopn("newbarn");
	//ios;
	int T=1;
	//cin>>T;
	while(T--){
		solve();
	}
}

Compilation message (stderr)

collider.cpp:37:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   37 | main(){
      | ^~~~
collider.cpp: In function 'void fopn(std::string)':
collider.cpp:12:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |  freopen((name+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
collider.cpp:13:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |  freopen((name+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100