Submission #382844

#	Time	Username	Problem	Language	Result	Execution time	Memory
382844		aris12345678	Exam (eJOI20_exam)	C++14	0 / 100	3 ms	620 KiB

exam

#include <bits/stdc++.h>
using namespace std;

const int mxN = 1e6+5;
int a[mxN], b[mxN];

int main() {
    int n;
    scanf("%d", &n);
    unordered_set<int> s;
    for(int i = 0; i < n; i++) {
        scanf("%d", &a[i]);
        s.insert(a[i]);
    }
    bool check = false;
    for(int i = 0; i < n; i++) {
        scanf("%d", &b[i]);
        if(s.find(b[i]) != s.end())
            check = true;
    }
    if(check)
        printf("%d\n", n);
    else
        printf("0\n");
    return 0;
}

Compilation message (stderr)

exam.cpp: In function 'int main()':
exam.cpp:9:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    9 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
exam.cpp:12:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   12 |         scanf("%d", &a[i]);
      |         ~~~~~^~~~~~~~~~~~~
exam.cpp:17:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   17 |         scanf("%d", &b[i]);
      |         ~~~~~^~~~~~~~~~~~~

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