oj.uz

Submission #59614

# Submission time Handle Problem Language Result Execution time Memory
59614 2018-07-22T17:50:24 Z IvanC Paths (BOI18_paths) C++17
100 / 100
 2212 ms 109436 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

const int MAXN = 3*1e5 + 10;

int N,M,K,cor[MAXN];
vector<int> grafo[MAXN];
ll tot,valor[MAXN];

void processa(vector<int> ordem){
	if(ordem.size() == 1) return;
	for(int i = 1;i<=N;i++){
		valor[i] = 0;
		if(cor[i] == ordem[0]) valor[i] = 1;
	}
	for(int i = 1;i<ordem.size()-1;i++){
		for(int v = 1;v<=N;v++){
			if(cor[v] != ordem[i]) continue;
			for(int u : grafo[v]){
				if(cor[u] == ordem[i-1]) valor[v] += valor[u];
			}
		}
	}
	for(int i = 1;i<=N;i++){
		if(cor[i] != ordem.back()) continue;
		for(int u : grafo[i]){
			if(cor[u] == ordem[ordem.size()-2]) tot += valor[u];
		}
	}
}

int main(){
	scanf("%d %d %d",&N,&M,&K);
	for(int i = 1;i<=N;i++){
		scanf("%d",&cor[i]);
		cor[i]--;
	}
	for(int i =1;i<=M;i++){
		int u,v;
		scanf("%d %d",&u,&v);
		grafo[u].push_back(v);
		grafo[v].push_back(u);
	}
	for(int bitmask = 1;bitmask < (1 << K);bitmask++){
		vector<int> temp;
		for(int i = 0;i<K;i++){
			if(bitmask & (1 << i)) temp.push_back(i);
		}
		do{
			processa(temp);
		}while(next_permutation(temp.begin(),temp.end()));
	}
	printf("%lld\n",tot);
	return 0;
}

Compilation message

paths.cpp: In function 'void processa(std::vector<int>)':
paths.cpp:17:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 1;i<ordem.size()-1;i++){
                ~^~~~~~~~~~~~~~~
paths.cpp: In function 'int main()':
paths.cpp:34:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d %d",&N,&M,&K);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~
paths.cpp:36:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&cor[i]);
   ~~~~~^~~~~~~~~~~~~~
paths.cpp:41:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d %d",&u,&v);
   ~~~~~^~~~~~~~~~~~~~~

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 7288 KB Output is correct
2 Correct 9 ms 7400 KB Output is correct
3 Correct 11 ms 7440 KB Output is correct
4 Correct 10 ms 7648 KB Output is correct
5 Correct 10 ms 7728 KB Output is correct
6 Correct 11 ms 7728 KB Output is correct
7 Correct 12 ms 7728 KB Output is correct
8 Correct 10 ms 7728 KB Output is correct
9 Correct 10 ms 7728 KB Output is correct
10 Correct 11 ms 7728 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 159 ms 14232 KB Output is correct
2 Correct 109 ms 16224 KB Output is correct
3 Correct 651 ms 29220 KB Output is correct
4 Correct 231 ms 29220 KB Output is correct
5 Correct 231 ms 29220 KB Output is correct
6 Correct 467 ms 37580 KB Output is correct
7 Correct 518 ms 44432 KB Output is correct
8 Correct 638 ms 49700 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 7288 KB Output is correct
2 Correct 9 ms 7400 KB Output is correct
3 Correct 11 ms 7440 KB Output is correct
4 Correct 10 ms 7648 KB Output is correct
5 Correct 10 ms 7728 KB Output is correct
6 Correct 11 ms 7728 KB Output is correct
7 Correct 12 ms 7728 KB Output is correct
8 Correct 10 ms 7728 KB Output is correct
9 Correct 10 ms 7728 KB Output is correct
10 Correct 11 ms 7728 KB Output is correct
11 Correct 159 ms 14232 KB Output is correct
12 Correct 109 ms 16224 KB Output is correct
13 Correct 651 ms 29220 KB Output is correct
14 Correct 231 ms 29220 KB Output is correct
15 Correct 231 ms 29220 KB Output is correct
16 Correct 467 ms 37580 KB Output is correct
17 Correct 518 ms 44432 KB Output is correct
18 Correct 638 ms 49700 KB Output is correct
19 Correct 191 ms 49700 KB Output is correct
20 Correct 146 ms 49700 KB Output is correct
21 Correct 598 ms 58532 KB Output is correct
22 Correct 272 ms 58532 KB Output is correct
23 Correct 205 ms 58532 KB Output is correct
24 Correct 427 ms 66928 KB Output is correct
25 Correct 614 ms 73960 KB Output is correct
26 Correct 654 ms 79004 KB Output is correct
27 Correct 228 ms 79004 KB Output is correct
28 Correct 272 ms 79004 KB Output is correct
29 Correct 1534 ms 87968 KB Output is correct
30 Correct 1034 ms 87968 KB Output is correct
31 Correct 1020 ms 92048 KB Output is correct
32 Correct 1587 ms 100672 KB Output is correct
33 Correct 12 ms 100672 KB Output is correct
34 Correct 9 ms 100672 KB Output is correct
35 Correct 9 ms 100672 KB Output is correct
36 Correct 10 ms 100672 KB Output is correct
37 Correct 9 ms 100672 KB Output is correct
38 Correct 9 ms 100672 KB Output is correct
39 Correct 8 ms 100672 KB Output is correct
40 Correct 10 ms 100672 KB Output is correct
41 Correct 9 ms 100672 KB Output is correct
42 Correct 10 ms 100672 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 100672 KB Output is correct
2 Correct 238 ms 100672 KB Output is correct
3 Correct 46 ms 100672 KB Output is correct
4 Correct 204 ms 100672 KB Output is correct
5 Correct 144 ms 100672 KB Output is correct
6 Correct 2212 ms 100672 KB Output is correct
7 Correct 84 ms 100672 KB Output is correct
8 Correct 473 ms 100672 KB Output is correct
9 Correct 278 ms 102400 KB Output is correct
10 Correct 291 ms 103760 KB Output is correct
11 Correct 766 ms 103760 KB Output is correct
12 Correct 1156 ms 104964 KB Output is correct
13 Correct 810 ms 105116 KB Output is correct
14 Correct 2179 ms 107960 KB Output is correct
15 Correct 2099 ms 109436 KB Output is correct
16 Correct 10 ms 109436 KB Output is correct
17 Correct 10 ms 109436 KB Output is correct
18 Correct 10 ms 109436 KB Output is correct
19 Correct 10 ms 109436 KB Output is correct
20 Correct 10 ms 109436 KB Output is correct
21 Correct 9 ms 109436 KB Output is correct
22 Correct 11 ms 109436 KB Output is correct
23 Correct 10 ms 109436 KB Output is correct
24 Correct 8 ms 109436 KB Output is correct
25 Correct 9 ms 109436 KB Output is correct