oj.uz

Submission #291137

# Submission time Handle Problem Language Result Execution time Memory
291137 2020-09-04T18:24:21 Z shayan_p Toy Train (IOI17_train) C++17
16 / 100
 266 ms 2944 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);
	    d[i] = -1;
	}
    }
    while(sz(q)){
	int u = q.front();
	q.pop();
	if(!pwr[u]){
	    for(int y : v[u]){
		assert(d[y] < 0);
	    }
	}	
	for(int y : rv[u]){
	    if(!del[y] && who[y] && d[y] >= 0)
		q.push(y), d[y] = -1;
	    if(!del[y] && !who[y] && --d[y] == 0)
		q.push(y), d[y] = -1;
	}
    }
    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];
    }
    assert(sz(e1) == sz(e2));
    for(int i = 0; i < sz(e1); i++){
	v[e1[i]].PB(e2[i]);
	rv[e2[i]].PB(e1[i]);
    }
    while(iter()){
    }
    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 8 ms 1152 KB Output is correct
2 Correct 8 ms 1152 KB Output is correct
3 Correct 8 ms 1152 KB Output is correct
4 Correct 9 ms 1152 KB Output is correct
5 Correct 8 ms 1152 KB Output is correct
6 Correct 8 ms 1152 KB Output is correct
7 Correct 7 ms 1152 KB Output is correct
8 Correct 8 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 4 ms 1152 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 1024 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 104 ms 1528 KB Output is correct
2 Correct 191 ms 1784 KB Output is correct
3 Correct 266 ms 1664 KB Output is correct
4 Runtime error 12 ms 2944 KB Execution killed with signal 11
5 Halted 0 ms 0 KB -

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 1280 KB Output is correct
2 Correct 10 ms 1536 KB Output is correct
3 Correct 10 ms 1664 KB Output is correct
4 Correct 13 ms 1664 KB Output is correct
5 Correct 10 ms 1664 KB Output is correct
6 Correct 11 ms 1664 KB Output is correct
7 Correct 11 ms 1664 KB Output is correct
8 Correct 11 ms 1664 KB Output is correct
9 Correct 10 ms 1536 KB Output is correct
10 Correct 11 ms 1664 KB Output is correct
11 Correct 10 ms 1664 KB Output is correct
12 Correct 10 ms 1664 KB Output is correct
13 Correct 11 ms 1664 KB Output is correct
14 Correct 10 ms 1536 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 11 ms 2688 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #6
0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1152 KB Output is correct
2 Correct 8 ms 1152 KB Output is correct
3 Correct 8 ms 1152 KB Output is correct
4 Correct 9 ms 1152 KB Output is correct
5 Correct 8 ms 1152 KB Output is correct
6 Correct 8 ms 1152 KB Output is correct
7 Correct 7 ms 1152 KB Output is correct
8 Correct 8 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 4 ms 1152 KB Output is correct
12 Runtime error 1 ms 1024 KB Execution killed with signal 11
13 Halted 0 ms 0 KB -