oj.uz

답안 #590696

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
590696 2022-07-06T08:50:28 Z 조영욱(#8414) Golf (JOI17_golf) C++17
30 / 100
 786 ms 325832 KB 
#include <bits/stdc++.h>
using namespace std;

int s,t,u,v;
int n;
int a[1000];
int b[1000];
int c[1000];
int d[1000];
vector<int> px;
vector<int> py;
bool alive[4002][4002];
int dx[4]={0,1,0,-1};
int dy[4]={1,0,-1,0};
typedef pair<int,int> P;
typedef pair<P,int> Pi;
int dist[4002][4002][4];

bool valid(int x,int y) {
    return x>=0&&x<px.size()&&y>=0&&y<py.size()&&alive[x][y];
}

int main(void) {
    memset(alive,-1,sizeof(alive));
    scanf("%d %d %d %d",&s,&t,&u,&v);
    s*=2;
    t*=2;
    u*=2;
    v*=2;
    px.push_back(s);
    py.push_back(t);
    px.push_back(u);
    py.push_back(v);
    scanf("%d",&n);
    for(int i=0;i<n;i++) {
        scanf("%d %d %d %d",&a[i],&b[i],&c[i],&d[i]);
        a[i]*=2;
        b[i]*=2;
        c[i]*=2;
        d[i]*=2;
        px.push_back(a[i]);
        px.push_back(b[i]);
        py.push_back(c[i]);
        py.push_back(d[i]);
        px.push_back(a[i]+1);
        px.push_back(b[i]-1);
        py.push_back(c[i]+1);
        py.push_back(d[i]-1);
    }
    sort(px.begin(),px.end());
    px.erase(unique(px.begin(),px.end()),px.end());
    sort(py.begin(),py.end());
    py.erase(unique(py.begin(),py.end()),py.end());
    s=lower_bound(px.begin(),px.end(),s)-px.begin();
    t=lower_bound(py.begin(),py.end(),t)-py.begin();
    u=lower_bound(px.begin(),px.end(),u)-px.begin();
    v=lower_bound(py.begin(),py.end(),v)-py.begin();
    for(int i=0;i<n;i++) {
        a[i]=lower_bound(px.begin(),px.end(),a[i])-px.begin();
        b[i]=lower_bound(px.begin(),px.end(),b[i])-px.begin();
        c[i]=lower_bound(py.begin(),py.end(),c[i])-py.begin();
        d[i]=lower_bound(py.begin(),py.end(),d[i])-py.begin();
        for(int x=a[i]+1;x<b[i];x++) {
            for(int y=c[i]+1;y<d[i];y++) {
                //printf("%d %d\n",x,y);
                alive[x][y]=false;
            }
        }
    }
    //printf("%d %d %d %d\n",s,t,u,v);
    memset(dist,-1,sizeof(dist));
    deque<Pi> dq;
    for(int i=0;i<4;i++) {
        dq.push_front(Pi(P(s,t),i));
        dist[s][t][i]=0;
    }
    while (!dq.empty()) {
        Pi now=dq.front();
        dq.pop_front();
        int x=now.first.first;
        int y=now.first.second;
        int d=now.second;
        int nx=x+dx[d];
        int ny=y+dy[d];
        if (!valid(nx,ny)) {
            continue;
        }
        for(int i=0;i<4;i++) {
int nd=dist[x][y][d]+(d!=i);
            if (dist[nx][ny][i]==-1||dist[nx][ny][i]>nd) {
                if (d==i) {
                    dq.push_front(Pi(P(nx,ny),i));
                    dist[nx][ny][i]=dist[x][y][d];
                }
                else {
                    dq.push_back(Pi(P(nx,ny),i));
                    dist[nx][ny][i]=dist[x][y][d]+1;
                }
            }
        }
    }
    int ret=1e9;
    for(int i=0;i<4;i++) {
        ret=min(ret,dist[u][v][i]);
    }
    printf("%d",ret+1);
}

Compilation message

golf.cpp: In function 'bool valid(int, int)':
golf.cpp:20:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     return x>=0&&x<px.size()&&y>=0&&y<py.size()&&alive[x][y];
      |                  ~^~~~~~~~~~
golf.cpp:20:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |     return x>=0&&x<px.size()&&y>=0&&y<py.size()&&alive[x][y];
      |                                     ~^~~~~~~~~~
golf.cpp: In function 'int main()':
golf.cpp:25:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |     scanf("%d %d %d %d",&s,&t,&u,&v);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
golf.cpp:34:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
golf.cpp:36:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |         scanf("%d %d %d %d",&a[i],&b[i],&c[i],&d[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 98 ms 266700 KB Output is correct
2 Correct 103 ms 266740 KB Output is correct
3 Correct 98 ms 266732 KB Output is correct
4 Correct 125 ms 267620 KB Output is correct
5 Correct 186 ms 277592 KB Output is correct
6 Correct 176 ms 273256 KB Output is correct
7 Correct 173 ms 273580 KB Output is correct
8 Correct 208 ms 272664 KB Output is correct
9 Correct 169 ms 272184 KB Output is correct
10 Correct 186 ms 273888 KB Output is correct
11 Correct 195 ms 274660 KB Output is correct
12 Correct 172 ms 271828 KB Output is correct
13 Correct 183 ms 273040 KB Output is correct
14 Correct 218 ms 274440 KB Output is correct
15 Correct 117 ms 266860 KB Output is correct
16 Correct 199 ms 267096 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 98 ms 266700 KB Output is correct
2 Correct 103 ms 266740 KB Output is correct
3 Correct 98 ms 266732 KB Output is correct
4 Correct 125 ms 267620 KB Output is correct
5 Correct 186 ms 277592 KB Output is correct
6 Correct 176 ms 273256 KB Output is correct
7 Correct 173 ms 273580 KB Output is correct
8 Correct 208 ms 272664 KB Output is correct
9 Correct 169 ms 272184 KB Output is correct
10 Correct 186 ms 273888 KB Output is correct
11 Correct 195 ms 274660 KB Output is correct
12 Correct 172 ms 271828 KB Output is correct
13 Correct 183 ms 273040 KB Output is correct
14 Correct 218 ms 274440 KB Output is correct
15 Correct 117 ms 266860 KB Output is correct
16 Correct 199 ms 267096 KB Output is correct
17 Correct 706 ms 322768 KB Output is correct
18 Correct 741 ms 325832 KB Output is correct
19 Correct 589 ms 306140 KB Output is correct
20 Correct 709 ms 314644 KB Output is correct
21 Correct 786 ms 325760 KB Output is correct
22 Correct 675 ms 319388 KB Output is correct
23 Correct 693 ms 312372 KB Output is correct
24 Correct 599 ms 306592 KB Output is correct
25 Correct 669 ms 311788 KB Output is correct
26 Correct 772 ms 306280 KB Output is correct
27 Correct 160 ms 266904 KB Output is correct
28 Correct 243 ms 267124 KB Output is correct
29 Correct 271 ms 267132 KB Output is correct

Subtask #3
0 / 70.0

# 결과 실행 시간 메모리 Grader output
1 Correct 98 ms 266700 KB Output is correct
2 Correct 103 ms 266740 KB Output is correct
3 Correct 98 ms 266732 KB Output is correct
4 Correct 125 ms 267620 KB Output is correct
5 Correct 186 ms 277592 KB Output is correct
6 Correct 176 ms 273256 KB Output is correct
7 Correct 173 ms 273580 KB Output is correct
8 Correct 208 ms 272664 KB Output is correct
9 Correct 169 ms 272184 KB Output is correct
10 Correct 186 ms 273888 KB Output is correct
11 Correct 195 ms 274660 KB Output is correct
12 Correct 172 ms 271828 KB Output is correct
13 Correct 183 ms 273040 KB Output is correct
14 Correct 218 ms 274440 KB Output is correct
15 Correct 117 ms 266860 KB Output is correct
16 Correct 199 ms 267096 KB Output is correct
17 Correct 706 ms 322768 KB Output is correct
18 Correct 741 ms 325832 KB Output is correct
19 Correct 589 ms 306140 KB Output is correct
20 Correct 709 ms 314644 KB Output is correct
21 Correct 786 ms 325760 KB Output is correct
22 Correct 675 ms 319388 KB Output is correct
23 Correct 693 ms 312372 KB Output is correct
24 Correct 599 ms 306592 KB Output is correct
25 Correct 669 ms 311788 KB Output is correct
26 Correct 772 ms 306280 KB Output is correct
27 Correct 160 ms 266904 KB Output is correct
28 Correct 243 ms 267124 KB Output is correct
29 Correct 271 ms 267132 KB Output is correct
30 Runtime error 29 ms 32844 KB Execution killed with signal 11
31 Halted 0 ms 0 KB -