oj.uz

Submission #366489

# Submission time Handle Problem Language Result Execution time Memory
366489 2021-02-14T09:19:53 Z i_love_vanshita Po (COCI21_po) C++17
0 / 70
 2 ms 640 KB 
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define radhey krishna      
#define endl "\n"
const int N = 1e6;
#define MOD 1000000007

// bool sortbysec(const pair<int,int> &a,
//               const pair<int,int> &b)
// {
//     return (a.second < b.second);

// }

ll gcd(ll a, ll b) 
{ 
    if (a == 0) 
        return b; 
    return gcd(b % a, a); 
} 

// void printDivisors(int n)
// {
//     // Note that this loop runs till square root
//     for (int i=1; i<=sqrt(n); i++)
//     {
//         if (n%i == 0)
//         {
//             // If divisors are equal, print only one
//             if (n/i == i)
//                 printf("%d ", i);

//             else // Otherwise print both
//                 printf("%d %d ", i, n/i);

//         }

//     }
// }
// void SieveOfEratosthenes(int n)
// {

//     bool prime[n + 1];
//     memset(prime, true, sizeof(prime));

//     for (int p = 2; p * p <= n; p++)
//     {

//         if (prime[p] == true)
//         {

//             for (ll i = p * p; i <= n; i += p)
//                 prime[i] = false;
//         }
//     }
    

//     for (ll p = 2; p <= n; p++){
//         if (prime[p]){
//             cout << p << " ";
//             //ans += prime[p];    
//             }
//             }        
//         cout<<endl;
//        // return ans;
// }
//   std::vector<int> v;
// void primeFactors(int n)  
// {  
//     while (n % 2 == 0)  
//     {  
//        // cout << 2 << " ";  
//     	v.push_back(2);
//         n = n/2;  
//     }  
  
//     for (int i = 3; i <= sqrt(n); i = i + 2)  
//     {  
//         while (n % i == 0)  
//         {  
//             //cout << i << " ";
//             v.push_back(i);     
//             n = n/i;  
//         }  
//     }  
  
//     if (n > 2)  
//         //cout << n << " ";  
//         v.push_back(n);
// }  

int ceil(int x,int y)   
{
    if(x%y)
    {
        int f=(x/y);
        return f+1;
    }
    else
    {
        return (x/y);
    }
}
       ll poww(ll a ,ll b){
       	ll res = 1;
       	for(int i = 1; i <= b; i++){
       		res *= a;
       	}
       	return res;
       }
       ll SUM(ll x){
       	ll sum = 0;   
       	while(x){
       		sum += x%10;
        x = x/10;
       	}      
       	return sum;   
       }

ll fast_exp(int base, int exp) {
    ll res=1;
    while(exp>0) {
       if(exp%2==1) res=(res*base)%MOD;
       base=(base*base)%MOD;
       exp/=2;
    }
    return res%MOD;
}
    
  int no_of_operations(string str, int n) 
{ 
    int count = 0; 
    for (int i = 0; i < n - 1; i++) { 
  
        if (str[i] != str[i + 1]) 
            count++; 
    } 
  
    return (count + 1) / 2; 
}    

void solve(){   
	int n;
	cin>>n;
	stack<int>st;
	st.push(0);
	int a[n+1];
	for(int i = 0; i < n; i++){
		cin>>a[i];
	}
	int cnt = 0;
	for(int i = 0; i < n ;i++){
		while(!st.empty() && st.top() > a[i]){
			st.pop();
		}
		if(st.top() == a[i]){
			continue;
		}
		if(st.top() < a[i]){     
			st.push(a[i]);
			cnt++;    
		}    
	}
	cout<<cnt<<endl;
}   

int main(){
            
       #ifndef ONLINE_JUDGE
    // for getting input from input.txt
    freopen("input.txt", "r", stdin);
    // for writing output to output.txt
    freopen("output.txt", "w", stdout);
#endif
       ios_base::sync_with_stdio(false);
       cin.tie(NULL);cout.tie(NULL);
    int t =1;
    //cin>>t;             
    while(t--){    
    	//cout<<"Case #"<<i<<": ";   
    	solve();  
    	//i++;   
    }       
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:172:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  172 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:174:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
  174 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 70.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 364 KB Output isn't correct
2 Incorrect 2 ms 364 KB Output isn't correct
3 Incorrect 2 ms 364 KB Output isn't correct
4 Incorrect 2 ms 640 KB Output isn't correct
5 Incorrect 2 ms 364 KB Output isn't correct
6 Incorrect 2 ms 364 KB Output isn't correct
7 Incorrect 2 ms 364 KB Output isn't correct