oj.uz

Submission #1035978

# Submission time Handle Problem Language Result Execution time Memory
1035978 2024-07-26T23:49:14 Z whyalwaysmezzz Robot (JOI21_ho_t4) C++14
100 / 100
 301 ms 122256 KB 
//**********************
//
//**********************
#include <bits/stdc++.h>
#define int long long
#define fi first
#define se second
#define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; i++)
#define FORD(i, b, a) for (int i = (b), _a = (a); i >= _a; i--)
#define add(a,b) a=(a+b)%MOD
#define BIT(mask,i) ((mask >> i) & 1ll )
#define OFF(mask,i) (mask & (~(1ll << i))) 
#define ON(mask,i) (mask | (1ll << i))
#define endl '\n'
#define DAO(mask,i) (mask ^ (1ll << i))    
#define add(a,b) a=(a+b)%MOD
#define m_p make_pair
#define m_t make_tuple
#define built(mask) __builtin_popcountll(mask)
#define all(x) x.begin(),x.end()
#define XD cout << '\n'
#define ii pair <int,int> 
#define iii pair<int,pair<int, int> >
#define TASK "robot1"
using namespace std;
const long long oo = 1e18;
const int N = 6e5+5;
const int MOD = 1e9+7;
vector< ii > a[N];
map<int , int> mp[N];
vector< iii> g[N];
int dist[N];
int sum[N];
bool vis[N];
void dij(int x)
{
	FOR(i,1,N) dist[i] = oo; 
	priority_queue< pair < int,int > , vector < pair < int ,int > > , greater < pair < int , int > > > q;
	dist[x] = 0;
	q.push(m_p(0, x));
	while (!q.empty())
	{
		auto p1 = q.top();
		int W = p1.fi;
		int x = p1.se;
		q.pop();
		if (vis[x])
			continue;
		vis[x] = 1;
		for (auto p2 : a[x])
		{
			int y = p2.fi;
			int w = p2.se;
			if (vis[y] || dist[y] < W + w)
				continue;
			dist[y] = W + w;
			q.push({W + w, y});
		}
	}
}
signed main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
//	freopen(TASK".inp","r",stdin);
	//freopen(TASK".out","w",stdout);
	int n,m,x,y,c,p;
	cin >> n >> m;
	FOR(i,1,m)
	{
		cin >> x >> y >> c >> p;
		g[x].push_back({c, {y, p}});
		g[y].push_back({c, {x, p}});
		a[x].push_back({y, p});
		a[y].push_back({x, p});
	}
	int cur = n;
	FOR(i,1,n)
	{
		sort(g[i].begin(), g[i].end());
		for (auto x : g[i])
			sum[x.fi] += x.se.se;
		for (auto x : g[i])
		{
			if (!vis[x.fi])
			{
				++cur;
				a[i].push_back(m_p(cur,0));
			}
			vis[x.fi] = 1;
			a[cur].push_back(m_p(x.se.fi, sum[x.fi] - x.se.se));
			a[x.se.fi].push_back(m_p(cur, 0));
		}
		for (auto x : g[i])
		{
			sum[x.fi] = 0;
			vis[x.fi] = 0;
		}
	}
	dij(1);
	if (dist[n] == oo)
		cout << "-1";
	else
		cout << dist[n];
	return 0;
}

Compilation message

Main.cpp: In function 'void dij(long long int)':
Main.cpp:37:21: warning: iteration 600004 invokes undefined behavior [-Waggressive-loop-optimizations]
   37 |  FOR(i,1,N) dist[i] = oo;
      |             ~~~~~~~~^~~~
Main.cpp:8:52: note: within this loop
    8 | #define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; i++)
      |                                                    ^
Main.cpp:37:2: note: in expansion of macro 'FOR'
   37 |  FOR(i,1,N) dist[i] = oo;
      |  ^~~

Subtask #1
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 61264 KB Output is correct
2 Correct 26 ms 61276 KB Output is correct
3 Correct 26 ms 61532 KB Output is correct
4 Correct 26 ms 61528 KB Output is correct
5 Correct 26 ms 61368 KB Output is correct
6 Correct 25 ms 61528 KB Output is correct
7 Correct 28 ms 61528 KB Output is correct
8 Correct 25 ms 61524 KB Output is correct
9 Correct 26 ms 62296 KB Output is correct
10 Correct 26 ms 62044 KB Output is correct
11 Correct 26 ms 62044 KB Output is correct
12 Correct 26 ms 61856 KB Output is correct
13 Correct 26 ms 62044 KB Output is correct
14 Correct 27 ms 62040 KB Output is correct
15 Correct 25 ms 61788 KB Output is correct
16 Correct 27 ms 62064 KB Output is correct
17 Correct 27 ms 61788 KB Output is correct
18 Correct 25 ms 61520 KB Output is correct
19 Correct 27 ms 62044 KB Output is correct
20 Correct 27 ms 61788 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 122 ms 83404 KB Output is correct
2 Correct 63 ms 71368 KB Output is correct
3 Correct 134 ms 95484 KB Output is correct
4 Correct 83 ms 75212 KB Output is correct
5 Correct 301 ms 122256 KB Output is correct
6 Correct 271 ms 118032 KB Output is correct
7 Correct 203 ms 111220 KB Output is correct
8 Correct 276 ms 112212 KB Output is correct
9 Correct 272 ms 111956 KB Output is correct
10 Correct 172 ms 94408 KB Output is correct
11 Correct 106 ms 86352 KB Output is correct

Subtask #3
42.0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 61264 KB Output is correct
2 Correct 26 ms 61276 KB Output is correct
3 Correct 26 ms 61532 KB Output is correct
4 Correct 26 ms 61528 KB Output is correct
5 Correct 26 ms 61368 KB Output is correct
6 Correct 25 ms 61528 KB Output is correct
7 Correct 28 ms 61528 KB Output is correct
8 Correct 25 ms 61524 KB Output is correct
9 Correct 26 ms 62296 KB Output is correct
10 Correct 26 ms 62044 KB Output is correct
11 Correct 26 ms 62044 KB Output is correct
12 Correct 26 ms 61856 KB Output is correct
13 Correct 26 ms 62044 KB Output is correct
14 Correct 27 ms 62040 KB Output is correct
15 Correct 25 ms 61788 KB Output is correct
16 Correct 27 ms 62064 KB Output is correct
17 Correct 27 ms 61788 KB Output is correct
18 Correct 25 ms 61520 KB Output is correct
19 Correct 27 ms 62044 KB Output is correct
20 Correct 27 ms 61788 KB Output is correct
21 Correct 122 ms 83404 KB Output is correct
22 Correct 63 ms 71368 KB Output is correct
23 Correct 134 ms 95484 KB Output is correct
24 Correct 83 ms 75212 KB Output is correct
25 Correct 301 ms 122256 KB Output is correct
26 Correct 271 ms 118032 KB Output is correct
27 Correct 203 ms 111220 KB Output is correct
28 Correct 276 ms 112212 KB Output is correct
29 Correct 272 ms 111956 KB Output is correct
30 Correct 172 ms 94408 KB Output is correct
31 Correct 106 ms 86352 KB Output is correct
32 Correct 100 ms 94936 KB Output is correct
33 Correct 117 ms 90860 KB Output is correct
34 Correct 194 ms 99528 KB Output is correct
35 Correct 152 ms 92004 KB Output is correct
36 Correct 195 ms 97044 KB Output is correct
37 Correct 220 ms 107992 KB Output is correct
38 Correct 236 ms 113296 KB Output is correct
39 Correct 133 ms 107756 KB Output is correct
40 Correct 269 ms 113456 KB Output is correct
41 Correct 292 ms 113492 KB Output is correct
42 Correct 265 ms 108744 KB Output is correct
43 Correct 107 ms 86740 KB Output is correct
44 Correct 178 ms 111984 KB Output is correct
45 Correct 226 ms 100936 KB Output is correct
46 Correct 196 ms 97152 KB Output is correct
47 Correct 221 ms 101916 KB Output is correct
48 Correct 289 ms 120900 KB Output is correct