oj.uz

Submission #519062

# Submission time Handle Problem Language Result Execution time Memory
519062 2022-01-25T14:26:12 Z tube5429 Toll (BOI17_toll) C++14
100 / 100
 112 ms 86836 KB 
#include<bits/stdc++.h>
using namespace std;

#define FOR(i,a,b) for(int i = (a) ; i<(b) ; i++)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for(int i = (b)-1 ; i>=(a) ; i--)
#define R0F(i,a) ROF(i,0,a)
#define REP(a) F0R(_,a)
#define each(e,a) for(auto &e : (a))
#define sz(v) (int)(v).size()
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define rsz resize
#define pb push_back
#define f first
#define s second
#define eb emplace_back
#define lb lower_bound
#define ub upper_bound
#define tcT template<class T
#define tcTU tcT, class U
#define nl "\n"

using ll = long long;
using vi = vector<int>;
using vl = vector<ll>;
using vb = vector<bool>;
using pi = pair<int,int>;
using vpi = vector<pi>;
using str = string;
using vs = vector<str>;
using db = double;
using pl = pair<ll,ll>;
using pd = pair<db,db>;
tcT> using V = vector<T>;
tcT> using pqg = priority_queue<T,vector<T>,greater<T>>;
tcTU> using PR = pair<T,U>;

const int MOD = 998244353;
const ll INF = 1e18;
const int dx[] = {-1,0,1,0}, dy[] = {0,-1,0,1};

constexpr int bits(int x) { return x == 0 ? 0 : 31 - __builtin_clz(x); }
constexpr bool onbit(int msk, int i) { return msk>>i&1; }
constexpr ll p2(int x) { return 1LL<<x; }
constexpr int pct(int x) { return __builtin_popcount(x); }
constexpr int lg2(int x) { return x == 0 ? 0 : 31 - __builtin_clz(x); }; //int only


tcT> bool ckmin(T&a, const T&b) { return b < a ? a = b,1 : 0; }
tcT> bool ckmax(T&a, const T&b) { return b > a ? a = b,1 : 0; }

ll cdiv(ll a, ll b) { return a/b+((a^b)>0&&a%b); }
ll fdiv(ll a, ll b) { return a/b-((a^b)<0&&a%b); } 

tcT> void remDup(V<T> &v) {
	sort(all(v)); v.erase(unique(all(v)), end(v)); }
void DBG() { cerr << "]\n"; }
template<class H, class... T> void DBG(H h, T... t) {
	cerr << h; if(sizeof...(t)) cerr << ", ";
	DBG(t...);
}
#ifdef LOCAL
#define dbg(...) cerr << "LINE(" << __LINE__ << ") -> [" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)
#else
#define dbg(...) 0
#endif // LOCAL

void setPrec() { cout << fixed << setprecision(16); }
void setIO(string NAME = "") {
	cin.tie(0)->sync_with_stdio(0);
	setPrec();
	if(sz(NAME)) {
		freopen((NAME + ".in").c_str(),"r",stdin);
		freopen((NAME + ".out").c_str(),"w",stdout);
	}
}

const int MX = 5e4+5;
int K, N, M, O;
int dp[MX][17][5][5], ans[5][5], tmp[5][5];

void cmb(int target[5][5], int a[5][5], int b[5][5]) {
	F0R(z, K) F0R(x, K) F0R(y, K) target[x][y] = min(target[x][y], a[x][z] + b[z][y]);
}

void solve() {
	cin>>K>>N>>M>>O;
	memset(dp, 0x3f, sizeof dp);
	REP(M) {
		int u,v,t;
		cin>>u>>v>>t;
		dp[u/K][0][u%K][v%K] = t;
	}
	FOR(j,1,17) for(int i = 0; i + (1 << j) < (N + K - 1)/K; i++) {
		cmb(dp[i][j], dp[i][j-1], dp[i + (1<<j-1)][j-1]);
	}
	while(O--) {
		int a,b; cin>>a>>b;
		memset(ans, 0x3f, sizeof ans);
		F0R(i, 5) ans[i][i] = 0;
		for(int curr = a/K, dest = b/K, i = 16 ; ~i ; i--) {
			if(curr + (1<<i) <= dest) {
				memset(tmp, 0x3f, sizeof tmp);
				cmb(tmp, ans, dp[curr][i]);
				memcpy(ans, tmp, sizeof ans);
				curr += (1<<i);
			}
		}
		cout << (ans[a%K][b%K] == 0x3f3f3f3f ? -1 : ans[a%K][b%K]) << nl;
	}
}

int main() {
   	setIO();

	int t=1;
	//cin>>t;
	while(t-->0) {
		solve();
	}
 
	return 0;
}

Compilation message

toll.cpp: In function 'void solve()':
toll.cpp:96:41: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   96 |   cmb(dp[i][j], dp[i][j-1], dp[i + (1<<j-1)][j-1]);
      |                                        ~^~
toll.cpp: In function 'void setIO(std::string)':
toll.cpp:74:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   74 |   freopen((NAME + ".in").c_str(),"r",stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
toll.cpp:75:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   75 |   freopen((NAME + ".out").c_str(),"w",stdout);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 69 ms 84548 KB Output is correct
2 Correct 32 ms 83384 KB Output is correct
3 Correct 40 ms 83396 KB Output is correct
4 Correct 32 ms 83392 KB Output is correct
5 Correct 36 ms 83460 KB Output is correct
6 Correct 34 ms 83404 KB Output is correct
7 Correct 35 ms 83472 KB Output is correct
8 Correct 70 ms 84352 KB Output is correct
9 Correct 72 ms 84292 KB Output is correct
10 Correct 54 ms 83524 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 90 ms 85124 KB Output is correct
2 Correct 32 ms 83472 KB Output is correct
3 Correct 32 ms 83384 KB Output is correct
4 Correct 33 ms 83352 KB Output is correct
5 Correct 36 ms 83396 KB Output is correct
6 Correct 32 ms 83472 KB Output is correct
7 Correct 35 ms 83524 KB Output is correct
8 Correct 38 ms 83512 KB Output is correct
9 Correct 78 ms 84284 KB Output is correct
10 Correct 98 ms 85700 KB Output is correct
11 Correct 81 ms 85124 KB Output is correct
12 Correct 82 ms 84736 KB Output is correct
13 Correct 93 ms 85892 KB Output is correct
14 Correct 64 ms 84864 KB Output is correct
15 Correct 63 ms 84608 KB Output is correct
16 Correct 70 ms 84616 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 83468 KB Output is correct
2 Correct 35 ms 83428 KB Output is correct
3 Correct 33 ms 83360 KB Output is correct
4 Correct 32 ms 83396 KB Output is correct
5 Correct 32 ms 83404 KB Output is correct
6 Correct 33 ms 83444 KB Output is correct
7 Correct 35 ms 83496 KB Output is correct
8 Correct 35 ms 83616 KB Output is correct
9 Correct 33 ms 83488 KB Output is correct
10 Correct 61 ms 84160 KB Output is correct
11 Correct 100 ms 85004 KB Output is correct
12 Correct 90 ms 85636 KB Output is correct
13 Correct 98 ms 85884 KB Output is correct
14 Correct 88 ms 85252 KB Output is correct
15 Correct 61 ms 84612 KB Output is correct
16 Correct 65 ms 84604 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 35 ms 83468 KB Output is correct
2 Correct 35 ms 83428 KB Output is correct
3 Correct 33 ms 83360 KB Output is correct
4 Correct 32 ms 83396 KB Output is correct
5 Correct 32 ms 83404 KB Output is correct
6 Correct 33 ms 83444 KB Output is correct
7 Correct 35 ms 83496 KB Output is correct
8 Correct 35 ms 83616 KB Output is correct
9 Correct 33 ms 83488 KB Output is correct
10 Correct 61 ms 84160 KB Output is correct
11 Correct 100 ms 85004 KB Output is correct
12 Correct 90 ms 85636 KB Output is correct
13 Correct 98 ms 85884 KB Output is correct
14 Correct 88 ms 85252 KB Output is correct
15 Correct 61 ms 84612 KB Output is correct
16 Correct 65 ms 84604 KB Output is correct
17 Correct 80 ms 84996 KB Output is correct
18 Correct 35 ms 83492 KB Output is correct
19 Correct 32 ms 83384 KB Output is correct
20 Correct 32 ms 83396 KB Output is correct
21 Correct 32 ms 83372 KB Output is correct
22 Correct 33 ms 83360 KB Output is correct
23 Correct 34 ms 83464 KB Output is correct
24 Correct 36 ms 83532 KB Output is correct
25 Correct 36 ms 83516 KB Output is correct
26 Correct 34 ms 83520 KB Output is correct
27 Correct 63 ms 84232 KB Output is correct
28 Correct 94 ms 85636 KB Output is correct
29 Correct 95 ms 85856 KB Output is correct
30 Correct 84 ms 85316 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 69 ms 84548 KB Output is correct
2 Correct 32 ms 83384 KB Output is correct
3 Correct 40 ms 83396 KB Output is correct
4 Correct 32 ms 83392 KB Output is correct
5 Correct 36 ms 83460 KB Output is correct
6 Correct 34 ms 83404 KB Output is correct
7 Correct 35 ms 83472 KB Output is correct
8 Correct 70 ms 84352 KB Output is correct
9 Correct 72 ms 84292 KB Output is correct
10 Correct 54 ms 83524 KB Output is correct
11 Correct 90 ms 85124 KB Output is correct
12 Correct 32 ms 83472 KB Output is correct
13 Correct 32 ms 83384 KB Output is correct
14 Correct 33 ms 83352 KB Output is correct
15 Correct 36 ms 83396 KB Output is correct
16 Correct 32 ms 83472 KB Output is correct
17 Correct 35 ms 83524 KB Output is correct
18 Correct 38 ms 83512 KB Output is correct
19 Correct 78 ms 84284 KB Output is correct
20 Correct 98 ms 85700 KB Output is correct
21 Correct 81 ms 85124 KB Output is correct
22 Correct 82 ms 84736 KB Output is correct
23 Correct 93 ms 85892 KB Output is correct
24 Correct 64 ms 84864 KB Output is correct
25 Correct 63 ms 84608 KB Output is correct
26 Correct 70 ms 84616 KB Output is correct
27 Correct 35 ms 83468 KB Output is correct
28 Correct 35 ms 83428 KB Output is correct
29 Correct 33 ms 83360 KB Output is correct
30 Correct 32 ms 83396 KB Output is correct
31 Correct 32 ms 83404 KB Output is correct
32 Correct 33 ms 83444 KB Output is correct
33 Correct 35 ms 83496 KB Output is correct
34 Correct 35 ms 83616 KB Output is correct
35 Correct 33 ms 83488 KB Output is correct
36 Correct 61 ms 84160 KB Output is correct
37 Correct 100 ms 85004 KB Output is correct
38 Correct 90 ms 85636 KB Output is correct
39 Correct 98 ms 85884 KB Output is correct
40 Correct 88 ms 85252 KB Output is correct
41 Correct 61 ms 84612 KB Output is correct
42 Correct 65 ms 84604 KB Output is correct
43 Correct 80 ms 84996 KB Output is correct
44 Correct 35 ms 83492 KB Output is correct
45 Correct 32 ms 83384 KB Output is correct
46 Correct 32 ms 83396 KB Output is correct
47 Correct 32 ms 83372 KB Output is correct
48 Correct 33 ms 83360 KB Output is correct
49 Correct 34 ms 83464 KB Output is correct
50 Correct 36 ms 83532 KB Output is correct
51 Correct 36 ms 83516 KB Output is correct
52 Correct 34 ms 83520 KB Output is correct
53 Correct 63 ms 84232 KB Output is correct
54 Correct 94 ms 85636 KB Output is correct
55 Correct 95 ms 85856 KB Output is correct
56 Correct 84 ms 85316 KB Output is correct
57 Correct 112 ms 86836 KB Output is correct
58 Correct 71 ms 84348 KB Output is correct
59 Correct 87 ms 85168 KB Output is correct