Submission #1194948

#	Time	Username	Problem	Language	Result	Execution time	Memory
1194948		badge881	Infinite Race (EGOI24_infiniterace2)	C++20	100 / 100	70 ms	9800 KiB

Main

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

int main()
{
    int n, q;
    scanf("%d %d", &n, &q);
    set<int> s;
    int ans = 0;
    for (int i = 0; i < q; i++)
    {
        int x;
        scanf("%d", &x);
        if (x > 0)
            if (s.count(x))
            {
                ans++;
                s.clear();
                s.insert(x);
            }
            else
                s.insert(x);
        else
            s.erase(-x);
    }
    printf("%d\n", ans);
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:7:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 |     scanf("%d %d", &n, &q);
      |     ~~~~~^~~~~~~~~~~~~~~~~
Main.cpp:13:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |         scanf("%d", &x);
      |         ~~~~~^~~~~~~~~~

• Subtask 1: 29 / 29
• Subtask 2: 34 / 34
• Subtask 3: 22 / 22
• Subtask 4: 15 / 15