oj.uz

답안 #1116762

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1116762 2024-11-22T10:47:30 Z OI_Account 무지개나라 (APIO17_rainbow) C++17
23 / 100
 3000 ms 30652 KB 
#include "rainbow.h"
#include <bits/stdc++.h>
using namespace std;

const int N = 200'000;
const int D = 4;
const int DX[D] = {0, 0, -1, 1};
const int DY[D] = {-1, 1, 0, 0};
const int S3 = 4'000'000;

int n, m, a, b, x1, yyy, x2, y2;
vector<pair<int, int>> path, vec3, gv3;
vector<char> vecDir = {'W', 'E', 'N', 'S'};
int markSub1[60][60], cnt[3][N + 10], cmpSub2;
int markSub2[3][N + 10], valSub2[N + 10], mark3[S3 + 10];


void uniquePath() {
    sort(path.begin(), path.end());
    path.resize(unique(path.begin(), path.end()) - path.begin());
}

bool isSub1() {
    return max(n, m) <= 50;
}

bool inPath(int x, int y) {
    int idx = lower_bound(path.begin(), path.end(), make_pair(x, y)) - path.begin();
    return idx < path.size() && path[idx] == make_pair(x, y);
}

bool inSub(int a, int b) {
    bool checkA = (x1 <= a && a <= x2);
    bool checkB = (yyy <= b && b <= y2);
    return checkA && checkB;
}

void initSub1() {
    uniquePath();
}

bool isSub2() {
    return n <= 2 && m <= N;
}

bool inGrid(int x, int y) {
    return min(x, y) >= 1 && x <= n && y <= m;
}

void dfs2(int i, int j) {
    markSub2[i][j] = cmpSub2;
    for (int d = 0; d < D; d++) {
        int nx = i + DX[d];
        int ny = j + DY[d];
        if (inGrid(nx, ny) && !inPath(nx, ny) && !markSub2[nx][ny])
            dfs2(nx, ny);
    }
}

void initSub2() {
    uniquePath();
    for (int i = 1; i <= n; i++)
        for (int j = 1; j <= m; j++) {
            cnt[i][j] = cnt[i][j - 1];
            if ((j == 1 || inPath(i, j - 1)) && !inPath(i, j))
                cnt[i][j]++;
        }
    for (int j = 1; j <= m; j++) {
        for (int i = 1; i <= n; i++)
            if (!inPath(i, j) && !markSub2[i][j]) {
                cmpSub2++;
                dfs2(i, j);
            }
        valSub2[j] = cmpSub2;
    }
}

void initSub3() {
    uniquePath();
    for (auto [x, y]: path) {
        for (int d = 0; d < D; d++) {
            int nx = x + DX[d], ny = y + DY[d];
            if (inGrid(nx, ny) && !inPath(nx, ny))
                vec3.push_back({nx, ny});
        }
    }
    sort(vec3.begin(), vec3.end());
    vec3.resize(unique(vec3.begin(), vec3.end()) - vec3.begin());
}

void init(int R, int C, int sr, int sc, int M, char *S) {
    n = R;
    m = C;
    a = sr;
    b = sc;
    path.push_back({a, b});
    for (int i = 0; i < M; i++) {
        int idx;
        for (int j = 0; j < D; j++)
            if (S[i] == vecDir[j])
                idx = j;
        int nx = path.back().first + DX[idx];
        int ny = path.back().second + DY[idx];
        path.push_back({nx, ny});
    }
    if (isSub1())
        initSub1();
    else if (isSub2())
        initSub2();
    else
        initSub3();
}

void dfs(int i, int j) {
    markSub1[i][j] = true;
    for (int d = 0; d < D; d++) {
        int nx = i + DX[d];
        int ny = j + DY[d];
        if (inSub(nx, ny) && !inPath(nx, ny) && !markSub1[nx][ny])
            dfs(nx, ny);
    }
}

int solveSub1() {
    for (int i = x1; i <= x2; i++)  
        for (int j = yyy; j <= y2; j++)
            markSub1[i][j] = 0;
    int ans = 0;
    for (int i = x1; i <= x2; i++)
        for (int j = yyy; j <= y2; j++)
            if (!inPath(i, j) && !markSub1[i][j]) {
                ans++;
                dfs(i, j);
            }
    return ans;
}

int solveSub2() {
    if (x1 == x2)
        return cnt[x2][y2] - cnt[x2][yyy] + (!inPath(x2, yyy));
    bool add = false;
    for (int i = 1; i <= n; i++)
        if (!inPath(i, yyy))
            add = true;
    return valSub2[y2] - valSub2[yyy] + add;
}

void calcGV3() {
    gv3.clear();
    for (auto [x, y]: vec3)
        if (inSub(x, y))
            gv3.push_back({x, y});
}

int inGV3(int x, int y) {
    int idx = lower_bound(gv3.begin(), gv3.end(), make_pair(x, y)) - gv3.begin();
    return idx < gv3.size() && gv3[idx] == make_pair(x, y)? idx: -1;
}

void dfs3(int i, int j, int id) {
    mark3[id] = true;
    for (int d = 0; d < D; d++) {
        int nx = i + DX[d];
        int ny = j + DY[d];
        int nId = inGV3(nx, ny);
        if (nId != -1 && !mark3[nId])
            dfs3(nx, ny, nId);
    }
}

int solveSub3() {
    calcGV3();
    for (int i = x1; i <= x2; i++) {
        gv3.push_back({i, yyy});
        gv3.push_back({i, y2});
    }
    for (int i = yyy; i <= y2; i++) {
        gv3.push_back({x1, i});
        gv3.push_back({x2, i});
    }
    sort(gv3.begin(), gv3.end());
    gv3.resize(unique(gv3.begin(), gv3.end()) - gv3.begin());
    vector<pair<int, int>> vec;
    for (auto [x, y]: vec)
        if (!inPath(x, y))
            vec.push_back({x, y});
    gv3 = vec;
    int ans = 0;
    for (int i = 0; i < gv3.size(); i++)
        if (!mark3[i]) {
            ans++;
            dfs3(gv3[i].first, gv3[i].second, i);
        }
    fill(mark3, mark3 + gv3.size(), 0);
    return ans;
}

int colour(int ar, int ac, int br, int bc) {
    x1 = ar;
    yyy = ac;
    x2 = br;
    y2 = bc;
    if (isSub1())
        return solveSub1();
    if (isSub2())
        return solveSub2();
    return solveSub3();
}

Compilation message

rainbow.cpp: In function 'bool inPath(int, int)':
rainbow.cpp:29:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     return idx < path.size() && path[idx] == make_pair(x, y);
      |            ~~~~^~~~~~~~~~~~~
rainbow.cpp: In function 'int inGV3(int, int)':
rainbow.cpp:157:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  157 |     return idx < gv3.size() && gv3[idx] == make_pair(x, y)? idx: -1;
      |            ~~~~^~~~~~~~~~~~
rainbow.cpp: In function 'int solveSub3()':
rainbow.cpp:189:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  189 |     for (int i = 0; i < gv3.size(); i++)
      |                     ~~^~~~~~~~~~~~
rainbow.cpp: In function 'void init(int, int, int, int, int, char*)':
rainbow.cpp:103:45: warning: 'idx' may be used uninitialized in this function [-Wmaybe-uninitialized]
  103 |         int ny = path.back().second + DY[idx];
      |                                       ~~~~~~^

Subtask #1
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 336 KB Output is correct
2 Correct 42 ms 504 KB Output is correct
3 Correct 61 ms 592 KB Output is correct
4 Correct 74 ms 620 KB Output is correct
5 Correct 41 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 48 ms 596 KB Output is correct
12 Correct 50 ms 596 KB Output is correct
13 Correct 78 ms 548 KB Output is correct
14 Correct 63 ms 532 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 504 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 504 KB Output is correct
3 Correct 115 ms 28360 KB Output is correct
4 Correct 127 ms 23228 KB Output is correct
5 Correct 142 ms 24448 KB Output is correct
6 Correct 148 ms 30652 KB Output is correct
7 Correct 130 ms 30396 KB Output is correct
8 Correct 74 ms 22984 KB Output is correct
9 Correct 120 ms 23168 KB Output is correct
10 Correct 132 ms 24764 KB Output is correct
11 Correct 147 ms 30636 KB Output is correct
12 Correct 126 ms 22524 KB Output is correct
13 Correct 120 ms 23228 KB Output is correct
14 Correct 133 ms 24372 KB Output is correct
15 Correct 121 ms 30640 KB Output is correct
16 Correct 141 ms 26564 KB Output is correct

Subtask #3
0 / 24.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 336 KB Output is correct
2 Incorrect 56 ms 9524 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #4
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 336 KB Output is correct
2 Correct 42 ms 504 KB Output is correct
3 Correct 61 ms 592 KB Output is correct
4 Correct 74 ms 620 KB Output is correct
5 Correct 41 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 48 ms 596 KB Output is correct
12 Correct 50 ms 596 KB Output is correct
13 Correct 78 ms 548 KB Output is correct
14 Correct 63 ms 532 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 504 KB Output is correct
18 Execution timed out 3048 ms 3368 KB Time limit exceeded
19 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 336 KB Output is correct
2 Correct 42 ms 504 KB Output is correct
3 Correct 61 ms 592 KB Output is correct
4 Correct 74 ms 620 KB Output is correct
5 Correct 41 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 48 ms 596 KB Output is correct
12 Correct 50 ms 596 KB Output is correct
13 Correct 78 ms 548 KB Output is correct
14 Correct 63 ms 532 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 504 KB Output is correct
18 Execution timed out 3048 ms 3368 KB Time limit exceeded
19 Halted 0 ms 0 KB -