oj.uz

답안 #786704

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
786704 2023-07-18T11:30:37 Z allin27x 열대 식물원 (Tropical Garden) (IOI11_garden) C++17
69 / 100
 2159 ms 6284 KB 
#include <bits/stdc++.h>
using namespace std;


int gl;
int ps[(int)15e4+2][2];
int vis[(int)15e4+2][2];
int ds[(int)15e4+2][2];
int gd[(int)15e4+2][2];

int a1 = 0; int a2 = 0;
int g1 = 0; int g2 = 0;
int dfs1(int p, int last, int len){
	int nx;
	if (last == ps[p][0]) nx = 1;
	else nx = 0;

	if (p==gl) return len * (2*nx-1);
	if (vis[p][nx]) return (int)1e7;
	vis[p][nx] = 1;
	return dfs1(ps[p][nx], p, len+1);
}


void answer(int x);


// void answer(int x){
//     cout<<x<<'\n';
// }

void dfs2(int p, int last){
	int nx;  if (last == ps[p][0]) nx = 1; else nx = 0;
	if (p == gl){
		gd[p][nx] = nx;
		ds[p][nx] = 0;
		return;
	}
	if (ds[p][nx]) return;
	if (vis[p][nx]){
		ds[p][nx] = (int)-1e5;
		return;
	}
	vis[p][nx] = 1;
	int nxt = ps[p][nx];
	int d; if (p == ps[nxt][0]) d = 1; else d = 0;
	dfs2(nxt, p);
	gd[p][nx] = gd[nxt][d];
	ds[p][nx] = ds[nxt][d]+1;
}


void count_routes(int N, int M, int P, int R[][2], int Q, int G[]){ 
	gl = P;
    for (int i=0; i<N; i++) ps[i][0]=-1, ps[i][1]=-1;
    for (int i=0; i<M; i++){
        int a = R[i][0]; int b= R[i][1];
        if (ps[a][0]==-1) ps[a][0] = b; else if (ps[a][1]==-1) ps[a][1] = b;
        if (ps[b][0]==-1) ps[b][0] = a; else if (ps[b][1]==-1) ps[b][1] = a;
    }
    for (int i=0; i<N; i++) if (ps[i][1]==-1) ps[i][1] = ps[i][0];
    
    for (int i=0; i<N; i++) vis[i][0] = 0, vis[i][1] = 0;
    int r1 = dfs1(ps[P][0], P, 1);
	for (int i=0; i<N; i++) vis[i][0] = 0, vis[i][1] = 0;
	int r2 = dfs1(ps[P][1], P, 1);
	if (r1!=1e7) {
		if (r1>0) g1 = 1;
		a1 = abs(r1);
	}
	if (r2!=1e7){
		if (r2>0) g2 = 1;
		a2 = abs(r2);
	}

	for (int i=0; i<N; i++) vis[i][0] = 0, vis[i][1] = 0;
    for (int i=0; i<N; i++) ds[i][0] = 0, ds[i][1] = 0;
    for (int i=0; i<N; i++) {
    	if (i==P) continue;
    	if (!ds[i][0]) dfs2(i, -1);
    }
    for (int q = 0; q<Q; q++){
    	int k = G[q];
    	int ans = 0;
    	for (int i=0; i<N; i++){
    		if (ds[i][0] < 0) continue;
    		if (k<ds[i][0]) continue;
    		int t= k - ds[i][0];
    		if (gd[i][0]==0 || i==P){
    			if (a1 == 0) continue;
    			if (g1 == 0 && t%a1 == 0) ans++;
    			if (g1 == 1 && a2 == 0 && (t==0 || t==a1)) ans++;
    			if (g1 == 1 && g2 == 0 && (t%(a1+a2)==0 || t%(a1+a2)==a1)) ans++;
				if (t && t<a1) continue;
				if (g1 == 1 && g2 == 1 && (t==0 || (t-a1)%a2 == 0)) ans++;    			 
    		} else {
    			if (a2 == 0) continue;
    			if (g2 == 1 && t%a2 == 0) ans++;
    			if (g2 == 0 && a1 == 0 && (t==0 || t==a2)) ans++;
    			if (g2 == 0 && g1 == 1 && (t%(a1+a2)==0 || t%(a1+a2)==a2)) ans++;
				if (t && t<a2) continue;
				if (g2 == 0 && g1 == 0 && (t==0 || (t-a2)%a1 == 0)) ans++; 
       		}
    	}
    	answer(ans);
    }
}

// int main(){
//     // int n = 5; int m = 5;
//     // int p=2;int q = 2; int g[] = {3,1};
//     // int r[][2]= {
//     //     {1,0},
//     //     {1,2},
//     //     {3,2},
//     //     {1,3},
//     //     {4,2}
//     // };

//     // count_routes(n,m,p,r,q,g);
//     // int n = 6; int m = 6;
//     // int p=0;int q = 1; int g[] = {3};
//     // int r[][2]= {
//     //     {1,2},
//     //     {0,1},
//     //     {0,3},
//     //     {3,4},
//     //     {4,5},
//     //     {1,5}
//     // };

//     // count_routes(n,m,p,r,q,g);
//     int n = 5; int m = 4;
//     int p=0;int q = 10; int g[] = {100,101,102,103,104,105,106,107,108,109};
//     int r[][2]= {
//         {0,1},
//         {1,2},
//         {2,3},
//         {3,4}
//     };

//     count_routes(n,m,p,r,q,g);
//     // cout<<'\n';
//     // for (int i=0; i<n; i++){
//     //     cout<<i<<' '<<jump(i, 4)<<'\n';
//     // }
// }

Subtask #1
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 240 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 240 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 4 ms 1364 KB Output is correct
12 Correct 8 ms 2128 KB Output is correct
13 Correct 15 ms 3540 KB Output is correct
14 Correct 25 ms 5580 KB Output is correct
15 Correct 27 ms 5644 KB Output is correct
16 Correct 25 ms 4348 KB Output is correct
17 Correct 22 ms 3756 KB Output is correct
18 Correct 9 ms 1832 KB Output is correct
19 Correct 24 ms 5588 KB Output is correct
20 Correct 27 ms 5752 KB Output is correct
21 Correct 23 ms 4308 KB Output is correct
22 Correct 23 ms 3788 KB Output is correct
23 Correct 26 ms 6284 KB Output is correct

Subtask #3
0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 240 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 4 ms 1364 KB Output is correct
12 Correct 8 ms 2128 KB Output is correct
13 Correct 15 ms 3540 KB Output is correct
14 Correct 25 ms 5580 KB Output is correct
15 Correct 27 ms 5644 KB Output is correct
16 Correct 25 ms 4348 KB Output is correct
17 Correct 22 ms 3756 KB Output is correct
18 Correct 9 ms 1832 KB Output is correct
19 Correct 24 ms 5588 KB Output is correct
20 Correct 27 ms 5752 KB Output is correct
21 Correct 23 ms 4308 KB Output is correct
22 Correct 23 ms 3788 KB Output is correct
23 Correct 26 ms 6284 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 39 ms 1364 KB Output is correct
26 Correct 48 ms 2132 KB Output is correct
27 Correct 1020 ms 3652 KB Output is correct
28 Correct 580 ms 5664 KB Output is correct
29 Correct 2159 ms 5748 KB Output is correct
30 Correct 1254 ms 4528 KB Output is correct
31 Correct 1222 ms 3796 KB Output is correct
32 Incorrect 55 ms 1876 KB Output isn't correct
33 Halted 0 ms 0 KB -