Submission #994782

#	Time	Username	Problem	Language	Result	Execution time	Memory
994782		guagua0407	Editor (BOI15_edi)	C++17	0 / 100	18 ms	2908 KiB

edi

//#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define f first
#define s second
#define all(x) x.begin(),x.end()
#define _ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

int dx[4]={0,0,1,-1};
int dy[4]={1,-1,0,0};

void setIO(string s) {
    freopen((s + ".in").c_str(), "r", stdin);
    freopen((s + ".out").c_str(), "w", stdout);
}

const int mxn=3e5+5;
int e[mxn];

int main() {_
    int n;
    cin>>n;
    for(int i=1;i<=n;i++){
        cin>>e[i];
    }
    vector<int> ans;
    ans.push_back(0);
    for(int i=1;i<=n;i++){
        if(e[i]>=0) ans.push_back(e[i]);
        else ans.pop_back();
    }
    cout<<ans.back()<<'\n';
    return 0;
}
//maybe its multiset not set
//yeeorz
//laborz

Compilation message (stderr)

edi.cpp: In function 'void setIO(std::string)':
edi.cpp:15:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |     freopen((s + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
edi.cpp:16:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |     freopen((s + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 20
• Subtask 2: 0 / 15
• Subtask 3: 0 / 28
• Subtask 4: 0 / 37