oj.uz

답안 #36084

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
36084 2017-12-05T09:30:07 Z DoanPhuDuc Soccer (JOI17_soccer) C++
100 / 100
 1233 ms 32704 KB 
#include <bits/stdc++.h>

#define FOR(x, a, b) for (int x = a; x <= b; ++x)
#define FOD(x, a, b) for (int x = a; x >= b; --x)
#define REP(x, a, b) for (int x = a; x < b; ++x)
#define DEBUG(X) { cout << #X << " = " << X << endl; }
#define PR(A, n) { cout << #A << " = "; FOR(_, 1, n) cout << A[_] << " "; cout << endl; }
#define PR0(A, n)  { cout << #A << " = "; REP(_, 0, n) cout << A[_] << " "; cout << endl; }

using namespace std;

typedef long long LL;

const int N = 5e2 + 10;
const int INF = 0x3f3f3f3f;
const LL INFL = 0x3f3f3f3f3f3f3f3fLL;

int dx[] = {+0, -1, +0, +1};
int dy[] = {-1, +0, +1, +0};

int n, m, q, A, B, C, sx, sy, tx, ty;
int g[N][N];
int f[4][N][N];

LL d[N][N][5];

struct State {
    int x, y, z;
    LL w;
    State () {}
    State (int x, int y, int z, LL w) : x(x), y(y), z(z), w(w) {}
    bool operator < (const State &that) const {
        if (w != that.w) return w < that.w;
        if (z != that.z) return z < that.z;
        if (x != that.x) return x < that.x;
        return y < that.y;
    }
};

set <State> S;

void Init() {
    FOR(i, 0, n)
        FOR(j, 0, m) {
            if (i - 1 >= 0) f[0][i][j] = min(f[0][i][j], f[0][i - 1][j] + 1);
            if (j - 1 >= 0) f[0][i][j] = min(f[0][i][j], f[0][i][j - 1] + 1);
        }
    FOR(i, 0, n)
        FOD(j, m, 0) {
            if (j + 1 <= m) f[1][i][j] = min(f[1][i][j], f[1][i][j + 1] + 1);
            if (i - 1 >= 0) f[1][i][j] = min(f[1][i][j], f[1][i - 1][j] + 1);
        }
    FOD(i, n, 0)
        FOD(j, m, 0) {
            if (i + 1 <= n) f[2][i][j] = min(f[2][i][j], f[2][i + 1][j] + 1);
            if (j + 1 <= m) f[2][i][j] = min(f[2][i][j], f[2][i][j + 1] + 1);
        }
    FOD(i, n, 0)
        FOR(j, 0, m) {
            if (i + 1 <= n) f[3][i][j] = min(f[3][i][j], f[3][i + 1][j] + 1);
            if (j - 1 <= m) f[3][i][j] = min(f[3][i][j], f[3][i][j - 1] + 1);
        }
    FOR(i, 0, n)
        FOR(j, 0, m)
            FOR(k, 0, 3) g[i][j] = min(g[i][j], f[k][i][j]);
}

bool Inside(int x, int y) {
    return 0 <= x && x <= n && 0 <= y && y <= m;
}

void Push(int u, int v, int k, int x, int y, int z, LL w) {
    if (d[u][v][k] > d[x][y][z] + w) {
        S.erase(State(u, v, k, d[u][v][k]));
        d[u][v][k] = d[x][y][z] + w;
        S.insert(State(u, v, k, d[u][v][k]));
    }
}

void Dijkstra() {
    memset(d, INFL, sizeof d);
    d[sx][sy][4] = 0; S.insert(State(sx, sy, 4, d[sx][sy][4]));
    while (S.size()) {
        int x = S.begin() -> x, y = S.begin() -> y, z = S.begin() -> z;
        S.erase(S.begin());
        if (z == 4) {
            FOR(k, 0, 3) {
                int u = x + dx[k], v = y + dy[k];
                if (Inside(u, v)) {
                    Push(u, v, k, x, y, z, A + B);
                    Push(u, v, 4, x, y, z, C);
                }
            }
        } else {
            int u = x + dx[z], v = y + dy[z];
            if (Inside(u, v)) Push(u, v, z, x, y, z, A);
            Push(x, y, 4, x, y, z, (LL)g[x][y] * C);
        }
    }
    LL ans = INFL;
    FOR(k, 0, 4) ans = min(ans, d[tx][ty][k]);
    printf("%lld", ans);
}

int main() {
  //  freopen("SOCCER.INP", "r", stdin);
  //  freopen("SOCCER.OUT", "w", stdout);
    scanf("%d%d", &n, &m);
    scanf("%d%d%d", &A, &B, &C);
    scanf("%d", &q);
    memset(f, INF, sizeof f);
    memset(g, INF, sizeof g);
    scanf("%d%d", &sx, &sy);
    FOR(i, 2, q - 1) {
        int x, y; scanf("%d%d", &x, &y);
        FOR(k, 0, 3) f[k][x][y] = 0;
    }
    scanf("%d%d", &tx, &ty);
    Init();
    Dijkstra();
    return 0;
}

Compilation message

soccer.cpp: In function 'void Dijkstra()':
soccer.cpp:81:29: warning: overflow in implicit constant conversion [-Woverflow]
     memset(d, INFL, sizeof d);
                             ^
soccer.cpp: In function 'int main()':
soccer.cpp:108:26: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &m);
                          ^
soccer.cpp:109:32: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d", &A, &B, &C);
                                ^
soccer.cpp:110:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &q);
                    ^
soccer.cpp:113:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &sx, &sy);
                            ^
soccer.cpp:115:40: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         int x, y; scanf("%d%d", &x, &y);
                                        ^
soccer.cpp:118:28: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &tx, &ty);
                            ^

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 163 ms 19636 KB Output is correct
2 Correct 3 ms 17260 KB Output is correct
3 Correct 773 ms 27160 KB Output is correct
4 Correct 673 ms 28612 KB Output is correct
5 Correct 123 ms 17524 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 893 ms 30592 KB Output is correct
2 Correct 866 ms 31384 KB Output is correct
3 Correct 533 ms 27028 KB Output is correct
4 Correct 473 ms 25576 KB Output is correct
5 Correct 519 ms 27160 KB Output is correct
6 Correct 513 ms 29536 KB Output is correct
7 Correct 769 ms 32704 KB Output is correct
8 Correct 643 ms 32572 KB Output is correct
9 Correct 793 ms 32308 KB Output is correct
10 Correct 116 ms 19900 KB Output is correct
11 Correct 753 ms 32704 KB Output is correct
12 Correct 739 ms 32044 KB Output is correct
13 Correct 419 ms 27952 KB Output is correct
14 Correct 746 ms 32704 KB Output is correct
15 Correct 563 ms 29536 KB Output is correct

Subtask #3
65.0 / 65.0

# 결과 실행 시간 메모리 Grader output
1 Correct 163 ms 19636 KB Output is correct
2 Correct 3 ms 17260 KB Output is correct
3 Correct 773 ms 27160 KB Output is correct
4 Correct 673 ms 28612 KB Output is correct
5 Correct 123 ms 17524 KB Output is correct
6 Correct 893 ms 30592 KB Output is correct
7 Correct 866 ms 31384 KB Output is correct
8 Correct 533 ms 27028 KB Output is correct
9 Correct 473 ms 25576 KB Output is correct
10 Correct 519 ms 27160 KB Output is correct
11 Correct 513 ms 29536 KB Output is correct
12 Correct 769 ms 32704 KB Output is correct
13 Correct 643 ms 32572 KB Output is correct
14 Correct 793 ms 32308 KB Output is correct
15 Correct 116 ms 19900 KB Output is correct
16 Correct 753 ms 32704 KB Output is correct
17 Correct 739 ms 32044 KB Output is correct
18 Correct 419 ms 27952 KB Output is correct
19 Correct 746 ms 32704 KB Output is correct
20 Correct 563 ms 29536 KB Output is correct
21 Correct 179 ms 19240 KB Output is correct
22 Correct 1196 ms 25708 KB Output is correct
23 Correct 1123 ms 24124 KB Output is correct
24 Correct 1233 ms 23200 KB Output is correct
25 Correct 906 ms 29140 KB Output is correct
26 Correct 1022 ms 25708 KB Output is correct
27 Correct 426 ms 17656 KB Output is correct
28 Correct 489 ms 17524 KB Output is correct
29 Correct 906 ms 22012 KB Output is correct
30 Correct 429 ms 17392 KB Output is correct
31 Correct 1039 ms 32704 KB Output is correct
32 Correct 1166 ms 29932 KB Output is correct
33 Correct 599 ms 29404 KB Output is correct
34 Correct 1109 ms 29008 KB Output is correct
35 Correct 396 ms 17656 KB Output is correct