Submission #1090898

#	Time	Username	Problem	Language	Result	Execution time	Memory
1090898		KasymK	Exam (eJOI20_exam)	C++17	12 / 100	17 ms	3416 KiB

exam

#include "bits/stdc++.h"
using namespace std;
#define ff first
#define ss second
#define all(v) v.begin(), v.end()
#define ll long long
#define pb push_back
#define pii pair<int, int>
#define pli pair<ll, int>
#define pll pair<ll, ll>
#define tr(i, c) for(auto i = c.begin(); i != c.end(); ++i)
#define wr puts("----------------")
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
const int N = 1e5+5;
int a[N], b[N], n;
bool vis[N];

int sub2(){
    int answer = 0;
    for(int i = 1; i <= n; ++i)
        if(b[1] == a[i]){
            answer++;
            for(int l = i-1; l >= 1 and !vis[l] and a[l] < a[i]; --l)
                answer++, vis[l] = 1;
            for(int r = i+1; r <= n and !vis[r] and a[r] < a[i]; ++r)
                answer++, vis[r] = 1;
        }
    return answer;
}

int sub4(){
    return 0;
}

int suball(){
    return 0;
}

int main(){
    scanf("%d", &n);
    for(int i = 1; i <= n; ++i){
        int x;
        scanf("%d", &x);
        a[i] = x;
    }
    for(int i = 1; i <= n; ++i){
        int x;
        scanf("%d", &x);
        b[i] = x;
    }
    bool ok = 1;
    for(int i = 1; i < n; ++i)
        ok &= (b[i] == b[i+1]);
    if(ok){
        int answer = sub2();
        printf("%d\n", answer);
        return 0;
    }
    if(n >= 5e3){
        int answer = sub4();
        printf("%d\n", answer);
        return 0;
    }
    int answer = suball();
    printf("%d\n", answer);
    return 0;
}

Compilation message (stderr)

exam.cpp: In function 'int main()':
exam.cpp:41:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   41 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
exam.cpp:44:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   44 |         scanf("%d", &x);
      |         ~~~~~^~~~~~~~~~
exam.cpp:49:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   49 |         scanf("%d", &x);
      |         ~~~~~^~~~~~~~~~

• Subtask 1: 0 / 14
• Subtask 2: 12 / 12
• Subtask 3: 0 / 13
• Subtask 4: 0 / 23
• Subtask 5: 0 / 16
• Subtask 6: 0 / 22