제출 #673293

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
673293		Alihan_8	Collider (IZhO11_collider)	C++17	100 / 100	379 ms	2500 KiB

collider

#include <bits/stdc++.h>
// include <ext/pb_ds/assoc_container.hpp>
// include <ext/pb_ds/tree_policy.hpp>
// using namespace __gnu_pbds;
using namespace std;
#define all(x) x.begin(), x.end()
#define pb push_back
// define ordered_set tree<int,null_type,less_equal<int>,rb_tree_tag,tree_order_statistics_node_update>
#define mpr make_pair
#define ln '\n'
void IO(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
#define int long long
signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int n, q; cin >> n >> q;
    vector <char> p(n);
    for ( auto &i: p ) cin >> i;
    while ( q-- ){
        char t; cin >> t;
        if ( t == 'a' ){
            int l, r; cin >> l >> r;
            --l, --r;
            char val = p[l];
            p.erase(p.begin()+l);
            p.insert(p.begin()+r, val);
        }
        else{
            int x; cin >> x;
            cout << p[--x] << ln;
        }
    }

    cout << '\n';
}

컴파일 시 표준 에러 (stderr) 메시지

collider.cpp: In function 'void IO(std::string)':
collider.cpp:11:29: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 | void IO(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
      |                      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
collider.cpp:11:70: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 | void IO(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
      |                                                               ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 100 / 100