oj.uz

Submission #408604

# Submission time Handle Problem Language Result Execution time Memory
408604 2021-05-19T09:04:21 Z MKopchev Toy Train (IOI17_train) C++14
100 / 100
 1123 ms 1500 KB 
#include "train.h"
#include<bits/stdc++.h>
using namespace std;

const int nmax=5e3+42;
int who[nmax];
int charge[nmax];

vector<int> prv[nmax];

bool on[nmax];
int n;

int outp[nmax];

bool been[nmax];

int owner;

int deg[nmax];

void dfs(int node)
{
    //cout<<"dfs "<<node<<" "<<owner<<endl;

    if(been[node])return;

    been[node]=1;

    for(auto w:prv[node])
    {
        //cout<<"w= "<<w<<" node= "<<node<<endl;

        if(who[w]==owner)dfs(w);
        else
        {
            deg[w]--;
            if(deg[w]==0)dfs(w);
        }
    }
}
vector<int> f(int person,vector<int> start)
{
    for(int i=1;i<=n;i++)been[i]=0;

    owner=person;

    for(auto w:start)
    {
        dfs(w);
    }

    vector<int> ret={};
    for(int i=1;i<=n;i++)
        if(been[i])ret.push_back(i);

    //cout<<"f "<<person<<" start: ";for(auto w:start)cout<<w<<" ";cout<<" ret: ";for(auto w:ret)cout<<w<<" ";cout<<endl;

    return ret;
}
std::vector<int> who_wins(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v) {
	n=a.size();
	for(int i=1;i<=n;i++)who[i]=a[i-1];

	for(int i=1;i<=n;i++)charge[i]=r[i-1];

	for(int i=1;i<=n;i++)on[i]=1;

	while(1)
	{
	    for(int i=1;i<=n;i++)
        {
            prv[i]={};
            deg[i]=0;
        }

	    for(int i=0;i<u.size();i++)
        {
            int from=u[i]+1;
            int to=v[i]+1;

            if(on[from]&&on[to])
            {
                prv[to].push_back(from);

                //cout<<"prv "<<to<<" "<<from<<endl;

                deg[from]++;
            }
        }

        vector<int> remain={},charges={};
        for(int i=1;i<=n;i++)
            if(on[i])
            {
                remain.push_back(i);
                if(charge[i])charges.push_back(i);
            }

        vector<int> help=f(1,charges);

        if(help==remain)
        {
            for(auto w:help)
                outp[w]=1;

            break;
        }
        else
        {
            vector<int> other={};

            int j=0;
            for(auto w:remain)
            {
                if(j<help.size()&&w==help[j])j++;
                else other.push_back(w);
            }

            help=f(0,other);

            for(auto w:help)
            {
                on[w]=0;
            }
        }
	}

	vector<int> ret={};
	for(int i=1;i<=n;i++)
        ret.push_back(outp[i]);

    return ret;
}

/*
int main() {
	int n, m;
	assert(2 == scanf("%d %d", &n, &m));

	vector<int> a(n), r(n), u(m), v(m);

	for(int i = 0; i < n; i++)
		assert(1 == scanf("%d", &a[i]));

	for(int i = 0; i < n; i++)
		assert(1 == scanf("%d", &r[i]));

	for(int i = 0; i < m; i++)
		assert(2 == scanf("%d %d", &u[i], &v[i]));

	vector<int> res = who_wins(a, r, u, v);

	for(int i = 0; i < (int)res.size(); i++)
		printf(i ? " %d" : "%d", res[i]);
	printf("\n");

	return 0;
}
*/

Compilation message

train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:77:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   77 |      for(int i=0;i<u.size();i++)
      |                  ~^~~~~~~~~
train.cpp:116:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  116 |                 if(j<help.size()&&w==help[j])j++;
      |                    ~^~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 844 KB Output is correct
2 Correct 6 ms 896 KB Output is correct
3 Correct 6 ms 844 KB Output is correct
4 Correct 8 ms 892 KB Output is correct
5 Correct 5 ms 844 KB Output is correct
6 Correct 6 ms 844 KB Output is correct
7 Correct 5 ms 964 KB Output is correct
8 Correct 7 ms 900 KB Output is correct
9 Correct 5 ms 844 KB Output is correct
10 Correct 5 ms 844 KB Output is correct
11 Correct 4 ms 904 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 238 ms 1420 KB Output is correct
2 Correct 399 ms 1408 KB Output is correct
3 Correct 545 ms 1412 KB Output is correct
4 Correct 8 ms 1228 KB Output is correct
5 Correct 10 ms 1296 KB Output is correct
6 Correct 10 ms 1100 KB Output is correct
7 Correct 9 ms 1228 KB Output is correct
8 Correct 8 ms 1100 KB Output is correct
9 Correct 8 ms 1108 KB Output is correct
10 Correct 8 ms 1100 KB Output is correct
11 Correct 8 ms 1100 KB Output is correct
12 Correct 7 ms 1152 KB Output is correct
13 Correct 8 ms 1280 KB Output is correct
14 Correct 8 ms 1228 KB Output is correct
15 Correct 8 ms 1228 KB Output is correct
16 Correct 8 ms 1228 KB Output is correct
17 Correct 10 ms 1248 KB Output is correct
18 Correct 714 ms 1124 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 1092 KB Output is correct
2 Correct 8 ms 1100 KB Output is correct
3 Correct 8 ms 1128 KB Output is correct
4 Correct 8 ms 1100 KB Output is correct
5 Correct 12 ms 1124 KB Output is correct
6 Correct 8 ms 1100 KB Output is correct
7 Correct 8 ms 1100 KB Output is correct
8 Correct 8 ms 1116 KB Output is correct
9 Correct 8 ms 1108 KB Output is correct
10 Correct 8 ms 1228 KB Output is correct
11 Correct 8 ms 1228 KB Output is correct
12 Correct 8 ms 1228 KB Output is correct
13 Correct 9 ms 1252 KB Output is correct
14 Correct 8 ms 1108 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1228 KB Output is correct
2 Correct 8 ms 1252 KB Output is correct
3 Correct 10 ms 1100 KB Output is correct
4 Correct 7 ms 1100 KB Output is correct
5 Correct 1 ms 432 KB Output is correct
6 Correct 4 ms 844 KB Output is correct
7 Correct 6 ms 844 KB Output is correct
8 Correct 6 ms 844 KB Output is correct
9 Correct 6 ms 844 KB Output is correct
10 Correct 2 ms 460 KB Output is correct
11 Correct 5 ms 844 KB Output is correct

Subtask #6
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 844 KB Output is correct
2 Correct 6 ms 896 KB Output is correct
3 Correct 6 ms 844 KB Output is correct
4 Correct 8 ms 892 KB Output is correct
5 Correct 5 ms 844 KB Output is correct
6 Correct 6 ms 844 KB Output is correct
7 Correct 5 ms 964 KB Output is correct
8 Correct 7 ms 900 KB Output is correct
9 Correct 5 ms 844 KB Output is correct
10 Correct 5 ms 844 KB Output is correct
11 Correct 4 ms 904 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 332 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 238 ms 1420 KB Output is correct
33 Correct 399 ms 1408 KB Output is correct
34 Correct 545 ms 1412 KB Output is correct
35 Correct 8 ms 1228 KB Output is correct
36 Correct 10 ms 1296 KB Output is correct
37 Correct 10 ms 1100 KB Output is correct
38 Correct 9 ms 1228 KB Output is correct
39 Correct 8 ms 1100 KB Output is correct
40 Correct 8 ms 1108 KB Output is correct
41 Correct 8 ms 1100 KB Output is correct
42 Correct 8 ms 1100 KB Output is correct
43 Correct 7 ms 1152 KB Output is correct
44 Correct 8 ms 1280 KB Output is correct
45 Correct 8 ms 1228 KB Output is correct
46 Correct 8 ms 1228 KB Output is correct
47 Correct 8 ms 1228 KB Output is correct
48 Correct 10 ms 1248 KB Output is correct
49 Correct 714 ms 1124 KB Output is correct
50 Correct 7 ms 1092 KB Output is correct
51 Correct 8 ms 1100 KB Output is correct
52 Correct 8 ms 1128 KB Output is correct
53 Correct 8 ms 1100 KB Output is correct
54 Correct 12 ms 1124 KB Output is correct
55 Correct 8 ms 1100 KB Output is correct
56 Correct 8 ms 1100 KB Output is correct
57 Correct 8 ms 1116 KB Output is correct
58 Correct 8 ms 1108 KB Output is correct
59 Correct 8 ms 1228 KB Output is correct
60 Correct 8 ms 1228 KB Output is correct
61 Correct 8 ms 1228 KB Output is correct
62 Correct 9 ms 1252 KB Output is correct
63 Correct 8 ms 1108 KB Output is correct
64 Correct 8 ms 1228 KB Output is correct
65 Correct 8 ms 1252 KB Output is correct
66 Correct 10 ms 1100 KB Output is correct
67 Correct 7 ms 1100 KB Output is correct
68 Correct 1 ms 432 KB Output is correct
69 Correct 4 ms 844 KB Output is correct
70 Correct 6 ms 844 KB Output is correct
71 Correct 6 ms 844 KB Output is correct
72 Correct 6 ms 844 KB Output is correct
73 Correct 2 ms 460 KB Output is correct
74 Correct 5 ms 844 KB Output is correct
75 Correct 330 ms 1348 KB Output is correct
76 Correct 427 ms 1500 KB Output is correct
77 Correct 576 ms 1400 KB Output is correct
78 Correct 567 ms 1400 KB Output is correct
79 Correct 577 ms 1396 KB Output is correct
80 Correct 9 ms 1228 KB Output is correct
81 Correct 9 ms 1100 KB Output is correct
82 Correct 10 ms 1100 KB Output is correct
83 Correct 10 ms 1228 KB Output is correct
84 Correct 12 ms 1228 KB Output is correct
85 Correct 12 ms 1128 KB Output is correct
86 Correct 14 ms 1260 KB Output is correct
87 Correct 8 ms 1100 KB Output is correct
88 Correct 14 ms 1124 KB Output is correct
89 Correct 11 ms 1128 KB Output is correct
90 Correct 19 ms 1184 KB Output is correct
91 Correct 18 ms 1192 KB Output is correct
92 Correct 38 ms 1220 KB Output is correct
93 Correct 35 ms 1176 KB Output is correct
94 Correct 35 ms 1100 KB Output is correct
95 Correct 39 ms 1200 KB Output is correct
96 Correct 127 ms 1120 KB Output is correct
97 Correct 672 ms 1184 KB Output is correct
98 Correct 1010 ms 1144 KB Output is correct
99 Correct 1123 ms 1160 KB Output is correct
100 Correct 683 ms 1220 KB Output is correct