제출 #481435

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
481435		MilosMilutinovic	Po (COCI21_po)	C++14	70 / 70	12 ms	1700 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,n) for (int i=a;i<n;i++)
#define per(i,a,n) for (int i=n-1;i>=a;i--)
#define pb push_back
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define fi first
#define se second
#define SZ(x) ((int)(x).size())
typedef vector<int> VI;
typedef long long ll;
typedef pair<int,int> PII;
typedef double db;
mt19937 mrand(random_device{}());
const ll mod=1000000007;
int rnd(int x) { return mrand() % x;}
ll powmod(ll a,ll b) {ll res=1;a%=mod; assert(b>=0); for(;b;b>>=1){if(b&1)res=res*a%mod;a=a*a%mod;}return res;}
ll gcd(ll a,ll b) { return b?gcd(b,a%b):a;}
// head

const int N=101000;
int n,a[N];

int main() {
	scanf("%d",&n);
	rep(i,0,n) scanf("%d",a+i);
	stack<int> stk;
	int ans=0;
	rep(i,0,n) {
		while (!stk.empty()&&stk.top()>a[i]) stk.pop();
		if (SZ(stk)&&stk.top()==a[i]) continue;
		if (a[i]!=0) ans++,stk.push(a[i]);
	}
	printf("%d",ans);
}

컴파일 시 표준 에러 (stderr) 메시지

Main.cpp: In function 'int main()':
Main.cpp:26:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |  scanf("%d",&n);
      |  ~~~~~^~~~~~~~~
Main.cpp:27:18: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |  rep(i,0,n) scanf("%d",a+i);
      |             ~~~~~^~~~~~~~~~

• Subtask 1: 70 / 70