oj.uz

Submission #223504

# Submission time Handle Problem Language Result Execution time Memory
223504 2020-04-15T10:18:16 Z maomao90 Checker (COCI19_checker) C++14
0 / 110
 3000 ms 4556 KB 
#include <cstdio>
#include <algorithm>
#include <utility>
#include <unordered_map>
#include <tuple>
#include <cmath>
#include <cassert>

using namespace std;

typedef pair <int, int> ii;
typedef pair <ii, int> iii;

struct pair_hash
{
	template <class T1, class T2>
	std::size_t operator() (const std::pair<T1, T2> &pair) const
	{
		return std::hash<T1>()(pair.first) ^ std::hash<T2>()(pair.second);
	}
};

int tc;
int N;
iii diagonals[200005];
unordered_map <ii, int, pair_hash> colours;
bool isInvalid[200005];
int impt1[200005], impt2[200005];

bool comp(iii right, iii left)
{
    int rx, ry, lx, ly;
    tie(rx, ry) = right.first; tie(lx, ly) = left.first;
    if (abs(rx - ry) < abs(lx - ly)) return true;
    else if (abs(rx - ry) == abs(lx - ly))
    {
        if (rx < ry) return true;
    }
    return false;
}

int main()
{
    scanf("%d%d", &tc, &N);
    //assert(1 == 2);
    for (int i = 1; i <= N; i++)
    {
        char temp; scanf("%c", &temp);
        colours[ii(i, (i + 1 > N ? 1 : i + 1))] = temp - '0';
        colours[ii((i + 1 > N ? 1 : i + 1), i)] = temp - '0';
        impt1[i] = i == N ? 1 : i + 1;
        impt2[i] = i == 1 ? N : i - 1;
    }
    for (int i = 0; i < N - 3; i++)
    {
        int X, Y, C; scanf("%d%d%d", &X, &Y, &C);
        if (X > Y) swap(X, Y);
        diagonals[i] = iii(ii(X, Y), C);
        colours[ii(X, Y)] = C;
        colours[ii(Y, X)] = C;
    }
    sort(diagonals, diagonals + N - 3, comp);
    for (int i = 0; i < N - 3; i++)
    {
        int x, y, c;
        tie(x, y) = diagonals[i].first; c = diagonals[i].second;
        if (isInvalid[x] || isInvalid[y])
        {
            printf("neispravna triangulacija\n");
            return 0;
        }
        int impt;
        if (impt1[x] == impt1[y] || impt1[x] == impt2[y]) impt = impt1[x];
        else impt = impt2[x];
        isInvalid[impt] = true;
        if (impt1[x] == impt) impt1[x] = y;
        else impt2[x] = y;
        if (impt1[y] == impt) impt1[y] = x;
        else impt2[y] = x;
    }
    for (int i = 1; i <= N; i++)
    {
        impt1[i] = i == N ? 1 : i + 1;
        impt2[i] = i == 1 ? N : i - 1;
    }
    for (int i = 0; i < N - 3; i++)
    {
        int x, y, c;
        tie(x, y) = diagonals[i].first; c = diagonals[i].second;
        int impt;
        if (impt1[x] == impt1[y] || impt1[x] == impt2[y]) impt = impt1[x];
        else impt = impt2[x];

        if (colours[ii(x, y)] == colours[ii(x, impt)] ||
            colours[ii(x, y)] == colours[ii(y, impt)] ||
            colours[ii(x, impt)] == colours[ii(y, impt)])
        {
            printf("neispravno bojenje\n");
            return 0;
        }
        if (impt1[x] == impt) impt1[x] = y;
        else impt2[x] = y;
        if (impt1[y] == impt) impt1[y] = x;
        else impt2[y] = x;
    }
    printf("tocno\n");
    return 0;
}

Compilation message

checker.cpp: In function 'int main()':
checker.cpp:65:19: warning: variable 'c' set but not used [-Wunused-but-set-variable]
         int x, y, c;
                   ^
checker.cpp:88:19: warning: variable 'c' set but not used [-Wunused-but-set-variable]
         int x, y, c;
                   ^
checker.cpp:44:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &tc, &N);
     ~~~~~^~~~~~~~~~~~~~~~~
checker.cpp:48:25: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         char temp; scanf("%c", &temp);
                    ~~~~~^~~~~~~~~~~~~
checker.cpp:56:27: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         int X, Y, C; scanf("%d%d%d", &X, &Y, &C);
                      ~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3080 ms 4376 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 3076 ms 4556 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -