oj.uz

Submission #290644

# Submission time Handle Problem Language Result Execution time Memory
290644 2020-09-04T09:02:41 Z Autoratch Bitaro’s Party (JOI18_bitaro) C++14
100 / 100
 1775 ms 418196 KB 
#include <bits/stdc++.h>
using namespace std;

const int N = 1e5 + 1;
const int K = 350;

int n,m,k;
vector<int> adj[N],rev[N];
int id[N],dp[N];
queue<int> q;
vector<pair<int,int> > res[N];
bool out[N];
stack<int> st;

int main()
{
	ios_base::sync_with_stdio(0); cin.tie(0);

	cin >> n >> m >> k;
	for(int i = 0;i < m;i++)
	{
		int a,b;
		cin >> a >> b;
		adj[a].push_back(b);
		rev[b].push_back(a);
	}
	for(int u = 1;u <= n;u++)
	{
		for(int v : rev[u]) id[v] = 0;
		for(int j = 0;j < K;j++)
		{
			pair<int,int> mx = {u,0};
			for(int v : rev[u]) 
			{
				while(id[v]<res[v].size() and out[res[v][id[v]].first]) id[v]++;
				if(id[v]<res[v].size() and res[v][id[v]].second+1>mx.second) mx = {res[v][id[v]].first,res[v][id[v]].second+1};
			}
			res[u].push_back(mx);
			out[mx.first] = true;
			st.push(mx.first);
			if(mx.first==u) break;
			else id[mx.first]++;
		}
		while(!st.empty()) out[st.top()] = false,st.pop();
	}
	while(k--)
	{
		int u,am,mm;
		cin >> u >> am,mm = am;
		while(am--){ int x; cin >> x; out[x] = true; st.push(x); }
		if(mm>=K)
		{
			for(int i = 1;i <= n;i++) dp[i] = INT_MIN;
			dp[u] = 0;
			int ans = -1;
			if(!out[u]) ans = 0;
			for(int i = u-1;i >= 1;i--)
			{
				for(int v : adj[i]) dp[i] = max(dp[i],dp[v]+1);
				if(!out[i]) ans = max(ans,dp[i]);
			}
			cout << ans << '\n';
		}
		else
		{
			int ans = -1;
			for(auto [x,y] : res[u]) if(!out[x]){ ans = y; break; } 
			cout << ans << '\n';
		}
		while(!st.empty()) out[st.top()] = false,st.pop();
	}
}

Compilation message

bitaro.cpp: In function 'int main()':
bitaro.cpp:35:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |     while(id[v]<res[v].size() and out[res[v][id[v]].first]) id[v]++;
      |           ~~~~~^~~~~~~~~~~~~~
bitaro.cpp:36:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     if(id[v]<res[v].size() and res[v][id[v]].second+1>mx.second) mx = {res[v][id[v]].first,res[v][id[v]].second+1};
      |        ~~~~~^~~~~~~~~~~~~~
bitaro.cpp:67:13: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   67 |    for(auto [x,y] : res[u]) if(!out[x]){ ans = y; break; }
      |             ^

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7424 KB Output is correct
2 Correct 5 ms 7424 KB Output is correct
3 Correct 5 ms 7552 KB Output is correct
4 Correct 5 ms 7424 KB Output is correct
5 Correct 8 ms 7936 KB Output is correct
6 Correct 8 ms 7936 KB Output is correct
7 Correct 9 ms 7936 KB Output is correct
8 Correct 18 ms 10752 KB Output is correct
9 Correct 18 ms 10752 KB Output is correct
10 Correct 17 ms 10752 KB Output is correct
11 Correct 16 ms 10368 KB Output is correct
12 Correct 11 ms 8704 KB Output is correct
13 Correct 16 ms 10240 KB Output is correct
14 Correct 14 ms 9444 KB Output is correct
15 Correct 10 ms 8448 KB Output is correct
16 Correct 14 ms 9344 KB Output is correct
17 Correct 14 ms 9600 KB Output is correct
18 Correct 11 ms 8576 KB Output is correct
19 Correct 15 ms 9600 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7424 KB Output is correct
2 Correct 5 ms 7424 KB Output is correct
3 Correct 5 ms 7552 KB Output is correct
4 Correct 5 ms 7424 KB Output is correct
5 Correct 8 ms 7936 KB Output is correct
6 Correct 8 ms 7936 KB Output is correct
7 Correct 9 ms 7936 KB Output is correct
8 Correct 18 ms 10752 KB Output is correct
9 Correct 18 ms 10752 KB Output is correct
10 Correct 17 ms 10752 KB Output is correct
11 Correct 16 ms 10368 KB Output is correct
12 Correct 11 ms 8704 KB Output is correct
13 Correct 16 ms 10240 KB Output is correct
14 Correct 14 ms 9444 KB Output is correct
15 Correct 10 ms 8448 KB Output is correct
16 Correct 14 ms 9344 KB Output is correct
17 Correct 14 ms 9600 KB Output is correct
18 Correct 11 ms 8576 KB Output is correct
19 Correct 15 ms 9600 KB Output is correct
20 Correct 509 ms 13192 KB Output is correct
21 Correct 522 ms 13048 KB Output is correct
22 Correct 506 ms 13048 KB Output is correct
23 Correct 561 ms 13116 KB Output is correct
24 Correct 1239 ms 256376 KB Output is correct
25 Correct 1293 ms 267896 KB Output is correct
26 Correct 1275 ms 267004 KB Output is correct
27 Correct 1604 ms 416764 KB Output is correct
28 Correct 1598 ms 416888 KB Output is correct
29 Correct 1592 ms 416940 KB Output is correct
30 Correct 1608 ms 415736 KB Output is correct
31 Correct 1622 ms 401036 KB Output is correct
32 Correct 1615 ms 415736 KB Output is correct
33 Correct 1098 ms 258588 KB Output is correct
34 Correct 935 ms 212472 KB Output is correct
35 Correct 1085 ms 256888 KB Output is correct
36 Correct 1355 ms 337424 KB Output is correct
37 Correct 1304 ms 305692 KB Output is correct
38 Correct 1358 ms 338464 KB Output is correct

Subtask #3
86.0 / 86.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7424 KB Output is correct
2 Correct 5 ms 7424 KB Output is correct
3 Correct 5 ms 7552 KB Output is correct
4 Correct 5 ms 7424 KB Output is correct
5 Correct 8 ms 7936 KB Output is correct
6 Correct 8 ms 7936 KB Output is correct
7 Correct 9 ms 7936 KB Output is correct
8 Correct 18 ms 10752 KB Output is correct
9 Correct 18 ms 10752 KB Output is correct
10 Correct 17 ms 10752 KB Output is correct
11 Correct 16 ms 10368 KB Output is correct
12 Correct 11 ms 8704 KB Output is correct
13 Correct 16 ms 10240 KB Output is correct
14 Correct 14 ms 9444 KB Output is correct
15 Correct 10 ms 8448 KB Output is correct
16 Correct 14 ms 9344 KB Output is correct
17 Correct 14 ms 9600 KB Output is correct
18 Correct 11 ms 8576 KB Output is correct
19 Correct 15 ms 9600 KB Output is correct
20 Correct 509 ms 13192 KB Output is correct
21 Correct 522 ms 13048 KB Output is correct
22 Correct 506 ms 13048 KB Output is correct
23 Correct 561 ms 13116 KB Output is correct
24 Correct 1239 ms 256376 KB Output is correct
25 Correct 1293 ms 267896 KB Output is correct
26 Correct 1275 ms 267004 KB Output is correct
27 Correct 1604 ms 416764 KB Output is correct
28 Correct 1598 ms 416888 KB Output is correct
29 Correct 1592 ms 416940 KB Output is correct
30 Correct 1608 ms 415736 KB Output is correct
31 Correct 1622 ms 401036 KB Output is correct
32 Correct 1615 ms 415736 KB Output is correct
33 Correct 1098 ms 258588 KB Output is correct
34 Correct 935 ms 212472 KB Output is correct
35 Correct 1085 ms 256888 KB Output is correct
36 Correct 1355 ms 337424 KB Output is correct
37 Correct 1304 ms 305692 KB Output is correct
38 Correct 1358 ms 338464 KB Output is correct
39 Correct 1314 ms 259704 KB Output is correct
40 Correct 1263 ms 261880 KB Output is correct
41 Correct 1267 ms 264832 KB Output is correct
42 Correct 1447 ms 262784 KB Output is correct
43 Correct 1288 ms 262288 KB Output is correct
44 Correct 542 ms 13432 KB Output is correct
45 Correct 517 ms 13048 KB Output is correct
46 Correct 540 ms 13092 KB Output is correct
47 Correct 530 ms 13204 KB Output is correct
48 Correct 521 ms 13048 KB Output is correct
49 Correct 1653 ms 416880 KB Output is correct
50 Correct 1594 ms 416504 KB Output is correct
51 Correct 540 ms 13432 KB Output is correct
52 Correct 514 ms 13048 KB Output is correct
53 Correct 1408 ms 336120 KB Output is correct
54 Correct 1356 ms 305912 KB Output is correct
55 Correct 1358 ms 336120 KB Output is correct
56 Correct 1313 ms 306424 KB Output is correct
57 Correct 545 ms 13560 KB Output is correct
58 Correct 532 ms 13560 KB Output is correct
59 Correct 505 ms 13048 KB Output is correct
60 Correct 523 ms 13040 KB Output is correct
61 Correct 1775 ms 416504 KB Output is correct
62 Correct 1498 ms 338944 KB Output is correct
63 Correct 1466 ms 306168 KB Output is correct
64 Correct 1680 ms 417656 KB Output is correct
65 Correct 1424 ms 337272 KB Output is correct
66 Correct 1394 ms 307960 KB Output is correct
67 Correct 1599 ms 417240 KB Output is correct
68 Correct 1358 ms 338424 KB Output is correct
69 Correct 1278 ms 303736 KB Output is correct
70 Correct 1590 ms 417656 KB Output is correct
71 Correct 1375 ms 338940 KB Output is correct
72 Correct 1343 ms 307448 KB Output is correct
73 Correct 1641 ms 417800 KB Output is correct
74 Correct 1406 ms 339064 KB Output is correct
75 Correct 1344 ms 307516 KB Output is correct
76 Correct 1659 ms 418196 KB Output is correct
77 Correct 1603 ms 417400 KB Output is correct
78 Correct 1623 ms 418040 KB Output is correct
79 Correct 538 ms 14712 KB Output is correct
80 Correct 511 ms 14200 KB Output is correct
81 Correct 509 ms 14252 KB Output is correct
82 Correct 1644 ms 416632 KB Output is correct
83 Correct 1683 ms 402296 KB Output is correct
84 Correct 1601 ms 416120 KB Output is correct
85 Correct 1627 ms 401400 KB Output is correct
86 Correct 1597 ms 416504 KB Output is correct
87 Correct 1648 ms 402680 KB Output is correct
88 Correct 542 ms 14584 KB Output is correct
89 Correct 553 ms 14748 KB Output is correct
90 Correct 510 ms 14200 KB Output is correct
91 Correct 510 ms 14252 KB Output is correct
92 Correct 509 ms 14300 KB Output is correct
93 Correct 499 ms 14328 KB Output is correct
94 Correct 1151 ms 259544 KB Output is correct
95 Correct 1002 ms 212216 KB Output is correct
96 Correct 1103 ms 258064 KB Output is correct
97 Correct 962 ms 215848 KB Output is correct
98 Correct 1135 ms 259344 KB Output is correct
99 Correct 973 ms 215672 KB Output is correct
100 Correct 596 ms 14584 KB Output is correct
101 Correct 595 ms 14716 KB Output is correct
102 Correct 589 ms 14220 KB Output is correct
103 Correct 567 ms 14200 KB Output is correct
104 Correct 556 ms 14200 KB Output is correct
105 Correct 572 ms 14200 KB Output is correct
106 Correct 1412 ms 337528 KB Output is correct
107 Correct 1369 ms 307272 KB Output is correct
108 Correct 1378 ms 339320 KB Output is correct
109 Correct 1302 ms 306460 KB Output is correct
110 Correct 1388 ms 339740 KB Output is correct
111 Correct 1354 ms 308088 KB Output is correct
112 Correct 546 ms 14840 KB Output is correct
113 Correct 538 ms 14840 KB Output is correct
114 Correct 517 ms 14152 KB Output is correct
115 Correct 522 ms 14328 KB Output is correct
116 Correct 516 ms 14200 KB Output is correct
117 Correct 506 ms 14200 KB Output is correct
118 Correct 1597 ms 417400 KB Output is correct
119 Correct 1381 ms 339152 KB Output is correct
120 Correct 1319 ms 306424 KB Output is correct
121 Correct 1606 ms 417400 KB Output is correct
122 Correct 1373 ms 337656 KB Output is correct
123 Correct 1319 ms 306576 KB Output is correct
124 Correct 1599 ms 417400 KB Output is correct
125 Correct 1427 ms 339464 KB Output is correct
126 Correct 1302 ms 305376 KB Output is correct