Submission #72405

#	Time	Username	Problem	Language	Result	Execution time	Memory
72405		cat > /dev/null (#118)	Chocolate Cookie Machine (FXCUP3_chocolate)	C++17	100 / 100	1894 ms	41200 KiB

chocolate

#include <cstdio>
#include <set>
#include <vector>
#define N 300010

using namespace std;

int n, m, k, e;

bool danger[N];
vector<int> shakeItBoomBoom[N];
set<int> rocadium;

int main()
{
    scanf("%d %d %d", &n, &m, &k);
    while(m--)
    {
        int v;
        scanf("%d", &v);
        danger[v] = true;
    }
    while(k--)
    {
        int a, b;
        scanf("%d %d", &a, &b);
        shakeItBoomBoom[a].push_back(b);
        shakeItBoomBoom[b].push_back(a);
    }
    
    for(int i=1; i<=n; ++i)
        rocadium.insert(i);
    
    bool ok = false;
    scanf("%d", &e);
    while(e--)
    {
        int v;
        char c;
        scanf(" L + %d = %c%*s", &v, &c);
        
        if(c == 'O')
        {
            ok = true;
            for(int to : shakeItBoomBoom[v])
                rocadium.erase(to);
        }
        else if(!danger[v])
        {
            set<int> list;
            for(int to : shakeItBoomBoom[v])
                if(rocadium.find(to) != rocadium.end())
                    list.insert(to);
            rocadium.clear();
            for(int to : list)
                rocadium.insert(to);
        }
    }

    if(ok)
    {
        for(int i=1; i<=n; ++i)
            if(danger[i])
                rocadium.erase(i);
    }
    else
    {
        for(int i=1; i<=n; ++i)
            if(danger[i])
                rocadium.insert(i);
    }
    
    printf("%d\n", (int)rocadium.size());
    for(int v : rocadium)
        printf("%d ", v);
    
    return 0;
}

Compilation message (stderr)

chocolate.cpp: In function 'int main()':
chocolate.cpp:16:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d", &n, &m, &k);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
chocolate.cpp:20:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &v);
         ~~~~~^~~~~~~~~~
chocolate.cpp:26:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &a, &b);
         ~~~~~^~~~~~~~~~~~~~~~~
chocolate.cpp:35:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &e);
     ~~~~~^~~~~~~~~~
chocolate.cpp:40:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf(" L + %d = %c%*s", &v, &c);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 28 / 28
• Subtask 2: 55 / 55
• Subtask 3: 17 / 17