제출 #906365

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
906365		iloveroseanne	Po (COCI21_po)	C++14	70 / 70	9 ms	1628 KiB

Main

/// PARK CHAEYOUNG IS MY LOVE
/// Author: Ngo Ba Van
/// roses_are_rosie
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define fi first
#define se second
#define MASK(i) (1LL<<i)
#define BIT(x,i) (x&MASK(i))
#define ONBIT(x,i) (x|MASK(i))
#define OFFBIT(x,i) (x&~MASK(i))
#define COUNT(x) (__builtin_popcount(x))
#define RVAN1102 signed main()
using ii=pair<int,int>;
const ll N=2e5+5,M=1e9+7;
ll n,m,res;
stack<int>st;
void nhap()
{
    cin>>n;
    for (int i=1;i<=n;i++)
    {
        int x;
        cin>>x;
        while (!st.empty()&&st.top()>x) st.pop();
        if (!st.empty()&&st.top()==x) continue;
        if (x) res++,st.push(x);
    }
    cout<<res;
}
RVAN1102 {
ios_base::sync_with_stdio(false);
cin.tie(NULL);
#define task ""
#define task "a"
if(fopen(task".inp","r"))
{
    freopen(task".inp","r",stdin);
    freopen(task".out","w",stdout);
}
int t=1;
//cin>>t;
while (t--)
nhap();
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp:36: warning: "task" redefined
   36 | #define task "a"
      | 
Main.cpp:35: note: this is the location of the previous definition
   35 | #define task ""
      | 
Main.cpp: In function 'int main()':
Main.cpp:39:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   39 |     freopen(task".inp","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
Main.cpp:40:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |     freopen(task".out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 70 / 70