oj.uz

Submission #786698

# Submission time Handle Problem Language Result Execution time Memory
786698 2023-07-18T11:25:38 Z allin27x Tropical Garden (IOI11_garden) C++17
69 / 100
 2160 ms 6332 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);
    }
    gd[P][0] = g1; gd[P][1] = g2;
    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 ){
    			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

# Verdict Execution time Memory Grader output
1 Correct 0 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 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 4 ms 1364 KB Output is correct
12 Correct 9 ms 2148 KB Output is correct
13 Correct 16 ms 3572 KB Output is correct
14 Correct 27 ms 5640 KB Output is correct
15 Correct 32 ms 5644 KB Output is correct
16 Correct 31 ms 4300 KB Output is correct
17 Correct 25 ms 3796 KB Output is correct
18 Correct 10 ms 1876 KB Output is correct
19 Correct 26 ms 5640 KB Output is correct
20 Correct 28 ms 5768 KB Output is correct
21 Correct 28 ms 4184 KB Output is correct
22 Correct 25 ms 3748 KB Output is correct
23 Correct 27 ms 6332 KB Output is correct

Subtask #3
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 2 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 4 ms 1364 KB Output is correct
12 Correct 9 ms 2148 KB Output is correct
13 Correct 16 ms 3572 KB Output is correct
14 Correct 27 ms 5640 KB Output is correct
15 Correct 32 ms 5644 KB Output is correct
16 Correct 31 ms 4300 KB Output is correct
17 Correct 25 ms 3796 KB Output is correct
18 Correct 10 ms 1876 KB Output is correct
19 Correct 26 ms 5640 KB Output is correct
20 Correct 28 ms 5768 KB Output is correct
21 Correct 28 ms 4184 KB Output is correct
22 Correct 25 ms 3748 KB Output is correct
23 Correct 27 ms 6332 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 42 ms 1452 KB Output is correct
26 Correct 53 ms 2156 KB Output is correct
27 Correct 1018 ms 3648 KB Output is correct
28 Correct 582 ms 5664 KB Output is correct
29 Correct 2160 ms 5744 KB Output is correct
30 Correct 1263 ms 4536 KB Output is correct
31 Incorrect 1223 ms 3908 KB Output isn't correct
32 Halted 0 ms 0 KB -