Submission #238613

#	Time	Username	Problem	Language	Result	Execution time	Memory
238613		SamAnd	Datum (COCI20_datum)	C++17	50 / 50	793 ms	504 KiB

datum

#include <bits/stdc++.h>
using namespace std;
#define m_p make_pair
#define all(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
#define fi first
#define se second
typedef long long ll;
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
mt19937 rnf(2106);
int q[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

struct ban
{
    int y, m, d;
    ban(){}
    ban(int y, int m, int d)
    {
        this->y = y;
        this->m = m;
        this->d = d;
    }
};

bool operator<(const ban& a, const ban& b)
{
    if (a.y < b.y)
        return true;
    if (a.y > b.y)
        return false;
    if (a.m < b.m)
        return true;
    if (a.m > b.m)
        return false;
    return a.d < b.d;
}

vector<ban> u;
void pre()
{
    for (int y = 0; y <= 9999; ++y)
    {
        if (y % 4 == 0)
            q[1] = 29;
        for (int m = 1; m <= 12; ++m)
        {
            for (int d = 1; d <= q[m - 1]; ++d)
            {
                vector<int> v;
                int x = y;
                while (x)
                {
                    v.push_back(x % 10);
                    x /= 10;
                }
                while (v.size() < 4)
                    v.push_back(0);
                x = m;
                while (x)
                {
                    v.push_back(x % 10);
                    x /= 10;
                }
                while (v.size() < 6)
                    v.push_back(0);
                x = d;
                while (x)
                {
                    v.push_back(x % 10);
                    x /= 10;
                }
                while (v.size() < 8)
                    v.push_back(0);
                reverse(all(v));
                bool z = true;
                for (int i = 0; i < 8; ++i)
                {
                    if (v[i] != v[8 - i - 1])
                    {
                        z = false;
                        break;
                    }
                }
                if (z)
                {
                    u.push_back(ban(y, m, d));
                }
            }
        }
        q[1] = 28;
    }
}

void solv()
{
    int qq;
    scanf("%d", &qq);
    while (qq--)
    {
        char a[20];
        scanf(" %s", a);
        int y = 0, d = 0, m = 0;
        for (int i = 6; i < 6 + 4; ++i)
        {
            y = y * 10 + a[i] - '0';
        }
        for (int i = 3; i < 3 + 2; ++i)
        {
            m = m * 10 + a[i] - '0';
        }
        for (int i = 0; i < 0 + 2; ++i)
        {
            d = d * 10 + a[i] - '0';
        }
        ban ans = *upper_bound(all(u), ban(y, m, d));
        y = ans.y;
        d = ans.d;
        m = ans.m;
        vector<int> v;
        int x = y;
        while (x)
        {
            v.push_back(x % 10);
            x /= 10;
        }
        while (v.size() < 4)
            v.push_back(0);
        x = m;
        while (x)
        {
            v.push_back(x % 10);
            x /= 10;
        }
        while (v.size() < 6)
            v.push_back(0);
        x = d;
        while (x)
        {
            v.push_back(x % 10);
            x /= 10;
        }
        while (v.size() < 8)
            v.push_back(0);
        reverse(all(v));
        printf("%d%d.%d%d.%d%d%d%d.\n", v[0], v[1], v[2], v[3], v[4], v[5], v[6], v[7]);
    }
}

int main()
{
    #ifdef SOMETHING
    freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);
    #endif // SOMETHING
    //ios_base::sync_with_stdio(false), cin.tie(0);
    pre();
    solv();
    return 0;
}

//while ((double)clock() / CLOCKS_PER_SEC <= 0.9){}

Compilation message (stderr)

datum.cpp: In function 'void solv()':
datum.cpp:97:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &qq);
     ~~~~~^~~~~~~~~~~
datum.cpp:101:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf(" %s", a);
         ~~~~~^~~~~~~~~~

• Subtask 1: 50 / 50