oj.uz

Submission #291087

# Submission time Handle Problem Language Result Execution time Memory
291087 2020-09-04T16:24:37 Z shayan_p Toy Train (IOI17_train) C++17
16 / 100
 381 ms 1712 KB 
#include<bits/stdc++.h>
#include "train.h"

#define F first
#define S second
#define PB push_back
#define sz(s) (int(s.size()))
#define bit(n, k) (((n)>>(k))&1)

using namespace std;

typedef pair<int, int> pii;
typedef long long ll;

const int maxn = 5010, inf = 1e9 + 10, mod = 1e9 + 7;

bool who[maxn], del[maxn], pwr[maxn];
vector<int> v[maxn], rv[maxn];
int n;

int d[maxn];

bool iter(){
    for(int i = 0; i < n; i++){
	d[i] = sz(v[i]);
    }
    queue<int> q;
    for(int i = 0; i < n; i++){
	if(pwr[i] && !del[i]){
	    q.push(i);
	}
    }
    while(sz(q)){
	int u = q.front();
	q.pop();
	d[u] = -1;
	for(int y : rv[u]){
	    if(!del[y] && who[y] && d[y] >= 0)
		q.push(y);
	    if(!del[y] && !who[y] && --d[y] == 0)
		q.push(y);
	}
    }
    bool yes = 0;
    for(int i = 0; i < n; i++){
	if(!del[i] && d[i] >= 0)
	    del[i] = 1, yes = 1;
    }
    for(int i = 0; i < n; i++){
	if(pwr[i] && !del[i]){
	    bool any = 0, all = 1;
	    for(int x : v[i])
		any|= del[x], all&= del[x];
	    if(who[i]){
		if(all){
		    del[i] = 1;
		    yes = 1;
		}
	    }
	    else{
		if(any){
		    del[i] = 1;
		    yes = 1;
		}
	    }
	}
    }
    return yes;
}

vector<int> who_wins(vector<int> _a, vector<int> _r, vector<int> e1, vector<int> e2){
    ::n = sz(_a);
    for(int i = 0; i < n; i++){
	who[i] = _a[i];
	pwr[i] = _r[i];
    }
    for(int i = 0; i < sz(e1); i++){
	v[e1[i]].PB(e2[i]);
	rv[e2[i]].PB(e1[i]);
    }
    while(iter()){
	// do nothing
    }
    vector<int> ans;
    for(int i = 0; i < n; i++){
	ans.PB(!del[i]);
    }
    return ans;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 1280 KB Output is correct
2 Correct 8 ms 1280 KB Output is correct
3 Correct 8 ms 1280 KB Output is correct
4 Correct 9 ms 1280 KB Output is correct
5 Correct 8 ms 1280 KB Output is correct
6 Correct 8 ms 1280 KB Output is correct
7 Correct 8 ms 1280 KB Output is correct
8 Correct 7 ms 1152 KB Output is correct
9 Correct 7 ms 1152 KB Output is correct
10 Correct 6 ms 1152 KB Output is correct
11 Correct 5 ms 1152 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 512 KB 3rd lines differ - on the 8th token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 121 ms 1712 KB Output is correct
2 Correct 224 ms 1664 KB Output is correct
3 Correct 296 ms 1696 KB Output is correct
4 Correct 11 ms 1664 KB Output is correct
5 Correct 16 ms 1664 KB Output is correct
6 Correct 13 ms 1664 KB Output is correct
7 Correct 11 ms 1664 KB Output is correct
8 Correct 10 ms 1664 KB Output is correct
9 Correct 9 ms 1664 KB Output is correct
10 Correct 10 ms 1664 KB Output is correct
11 Correct 10 ms 1536 KB Output is correct
12 Correct 11 ms 1536 KB Output is correct
13 Correct 11 ms 1664 KB Output is correct
14 Correct 11 ms 1664 KB Output is correct
15 Correct 11 ms 1664 KB Output is correct
16 Correct 13 ms 1664 KB Output is correct
17 Correct 11 ms 1664 KB Output is correct
18 Correct 381 ms 1308 KB Output is correct

Subtask #4
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 9 ms 1408 KB 3rd lines differ - on the 696th token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 11 ms 1696 KB 3rd lines differ - on the 18th token, expected: '0', found: '1'
2 Halted 0 ms 0 KB -

Subtask #6
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 1280 KB Output is correct
2 Correct 8 ms 1280 KB Output is correct
3 Correct 8 ms 1280 KB Output is correct
4 Correct 9 ms 1280 KB Output is correct
5 Correct 8 ms 1280 KB Output is correct
6 Correct 8 ms 1280 KB Output is correct
7 Correct 8 ms 1280 KB Output is correct
8 Correct 7 ms 1152 KB Output is correct
9 Correct 7 ms 1152 KB Output is correct
10 Correct 6 ms 1152 KB Output is correct
11 Correct 5 ms 1152 KB Output is correct
12 Incorrect 1 ms 512 KB 3rd lines differ - on the 8th token, expected: '0', found: '1'
13 Halted 0 ms 0 KB -