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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#532755 | #6660. 택시 여행 | orz_z | 0 | 720ms | 50580kb | C++14 | 6.0kb | 2024-08-25 11:17:22 | 2024-08-25 11:17:22 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
//#define int long long
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef double db;
#define F(i, a, b) for(int i = a; i <= (b); ++i)
#define F2(i, a, b) for(int i = a; i < (b); ++i)
#define dF(i, a, b) for(int i = a; i >= (b); --i)
template<typename T> void debug(string s, T x) {cerr << "[" << s << "] = [" << x << "]\n";}
template<typename T, typename... Args> void debug(string s, T x, Args... args) {for (int i = 0, b = 0; i < (int)s.size(); i++) if (s[i] == '(' || s[i] == '{') b++;else if (s[i] == ')' || s[i] == '}') b--;else if (s[i] == ',' && b == 0) {cerr << "[" << s.substr(0, i) << "] = [" << x << "] | ";debug(s.substr(s.find_first_not_of(' ', i + 1)), args...);break;}}
#ifdef ONLINE_JUDGE
#define Debug(...)
#else
#define Debug(...) debug(#__VA_ARGS__, __VA_ARGS__)
#endif
#define pb push_back
#define fi first
#define se second
#define Mry fprintf(stderr, "%.3lf MB\n", (&Med - &Mbe) / 1048576.0)
#define Try cerr << 1e3 * clock() / CLOCKS_PER_SEC << " ms\n";
typedef long long ll;
// namespace Fread {const int SIZE = 1 << 17; char buf[SIZE], *S, *T; inline char getchar() {if (S == T) {T = (S = buf) + fread(buf, 1, SIZE, stdin); if (S == T) return '\n';} return *S++;}}
// namespace Fwrite {const int SIZE = 1 << 17; char buf[SIZE], *S = buf, *T = buf + SIZE; inline void flush() {fwrite(buf, 1, S - buf, stdout), S = buf;} inline void putchar(char c) {*S++ = c;if (S == T) flush();} struct NTR {~NTR() {flush();}} ztr;}
// #ifdef ONLINE_JUDGE
// #define getchar Fread::getchar
// #define putchar Fwrite::putchar
// #endif
inline int ri() {
int x = 0;
bool t = 0;
char c = getchar();
while (c < '0' || c > '9') t |= c == '-', c = getchar();
while (c >= '0' && c <= '9') x = (x << 3) + (x << 1) + (c ^ 48), c = getchar();
return t ? -x : x;
}
inline void wi(int x) {
if (x < 0) {
putchar('-'), x = -x;
}
if (x > 9) wi(x / 10);
putchar(x % 10 + 48);
}
inline void wi(int x, char s) {
wi(x), putchar(s);
}
bool Mbe;
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
const int mod = 998244353;
const ll inf = 0x3f3f3f3f3f3f3f3f;
const int _ = 2e5 + 5;
bool Med;
int n, tot, head[_], to[_ << 1], nxt[_ << 1], w[_ << 1];
void add(int u, int v, int c) {
to[++tot] = v, nxt[tot] = head[u], head[u] = tot, w[tot] = c;
}
namespace Dis {
int dfn[_], cnt, Fa[_], st[_][20];
ll dep[_];
void dfs(int u, int fa) {
dfn[u] = ++cnt;
Fa[u] = fa;
st[dfn[u]][0] = u;
for(int i = head[u], v = to[i]; i; i = nxt[i], v = to[i]) if(v != fa) {
dep[v] = dep[u] + w[i];
dfs(v, u);
}
}
int get(int x, int y) {
return dfn[Fa[x]] < dfn[Fa[y]] ? x : y;
}
int lg[_];
int LCA(int u, int v) {
if(u == v) return u;
u = dfn[u], v = dfn[v];
if(u > v) swap(u, v);
u++;
int t = lg[v - u + 1];
return Fa[get(st[u][t], st[v - (1 << t) + 1][t])];
}
ll Dis(int u, int v) {
// Debug(u, v, LCA(u, v));
return dep[u] + dep[v] - (dep[LCA(u, v)] << 1);
}
void init() {
F(i, 2, n) lg[i] = lg[i >> 1] + 1;
dfs(1, 0);
F(j, 1, lg[n]) {
F(i, 1, n - (1 << j) + 1) st[i][j] = get(st[i][j - 1], st[i + (1 << (j - 1))][j - 1]);
}
}
}
ll f[_];
int Sum, rt, sz[_]; bool vis[_];
void get_rt(int u, int fa) {
int mx = 0;
for(int i = head[u], v = to[i]; i; i = nxt[i], v = to[i]) if(v != fa &&!vis[v]) {
get_rt(v, u);
mx = max(mx, sz[v]);
}
mx = max(mx, Sum - sz[u]);
if(mx <= Sum / 2) {
rt = u;
}
}
void get_sz(int u, int fa) {
sz[u] = 1;
for(int i = head[u], v = to[i]; i; i = nxt[i], v = to[i]) if(v != fa && !vis[v]) {
get_sz(v, u);
sz[u] += sz[v];
}
}
int Fa[_];
void work(int u) {
// Debug(u);
vis[u] = 1;
for(int i = head[u], v = to[i]; i; i = nxt[i], v = to[i]) if(!vis[v]) {
get_sz(v, u);
Sum = sz[v];
get_rt(v, u);
Fa[rt] = u;
work(rt);
}
}
pair<ll, ll> operator - (pair<ll, ll> a, pair<ll, ll> b) {
return make_pair(a.fi - b.fi, a.se - b.se);
}
struct Tubao {
vector<pair<ll, ll>> a;
void ins(ll x, ll y) {
if(a.empty()) {
a.pb({x, y});
return;
}
while(a.size() > 1 && 1ll * (a.back().se - a[(int)a.size() - 2].se) * (x - a.back().fi) < 1ll * (a.back().fi - a[(int)a.size() - 2].fi) * (y - a.back().se)) a.pop_back();
a.pb({x, y});
}
ll qry(ll x) {
if(a.empty()) {
return inf;
}
ll res = inf;
for(pii v : a) res = min(res, v.fi * x + v.se);
return res;
// if((int)a.size() == 1) {
// return a.front().fi * x + a.front().se;
// }
// int l = 1, r = (int)a.size() - 1, mid, res = 0;
// while(l <= r) {
// mid = (l + r) >> 1;
// if((a[mid].se - a[mid - 1].se) <= (a[mid].fi - a[mid - 1].fi) * (-x)) {
// l = mid + 1;
// res = mid;
// } else {
// r = mid - 1;
// }
// }
// return a[res].fi * x + a[res].se;
}
} d[_];
ll a[_], b[_];
void ins(int u) {
for(int nw = u; nw; nw = Fa[nw]) {
d[nw].ins(a[u], f[u] + a[u] * Dis::Dis(u, nw) + b[u]);
}
}
ll qry(int u) {
ll res = inf;
for(int nw = u; nw; nw = Fa[nw]) {
res = min(res, d[nw].qry(Dis::Dis(u, nw)));
}
return res;
}
int p[_];
vector<long long> travel(vector<long long> A, vector<int> B, vector<int> U, vector<int> V, vector<int> W) {
n = A.size();
F(i, 1, n) a[i] = B[i - 1], b[i] = A[i - 1];
F(i, 0, n - 2) {
U[i]++, V[i]++;
add(U[i], V[i], W[i]);
add(V[i], U[i], W[i]);
}
Dis::init();
// Debug("Yes");
f[1] = 0;
F(i, 2, n) f[i] = a[1] * Dis::Dis(1, i) + b[1];
// Debug("2");
Sum = n;
get_sz(1, 0);
get_rt(1, 0);
work(rt);
// Debug("done");
F(i, 1, n) p[i] = i;
sort(p + 1, p + n + 1, [&](int a1, int b1) { return a[a1] > a[b1]; });
ins(1);
// F(i, 2, n) Debug(i, f[i], Dis::Dis(1, i));
F(i, 1, n) {
if(p[i] == 1) continue;
// Debug(p[i], f[p[i]], qry(p[i]));
f[p[i]] = qry(p[i]);
ins(p[i]);
// Debug(qry(p[i]));
}
// F(i, 1, n) {
// Debug(i, qry(i));
// }
vector<ll> f2;
F(i, 2, n) f2.pb(qry(i));
return f2;
}
//signed main() {
// // Mry;
// travel({10, 5, 13, 4, 3}, {10, 7, 5, 9, 1}, {1, 0, 3, 2}, {0, 2, 2, 4}, {1, 5, 10, 3});
// // Try;
// return 0;
//}
Details
Tip: Click on the bar to expand more detailed information
Subtask #1:
score: 0
Wrong Answer
Test #1:
score: 0
Wrong Answer
time: 0ms
memory: 20280kb
input:
2 684124582850 713748627948 74361 256955 0 1 661088
output:
secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I -371603186 secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I
result:
wrong answer 2nd lines differ - expected: '733283747618', found: '-371603186'
Subtask #2:
score: 0
Wrong Answer
Test #31:
score: 0
Wrong Answer
time: 720ms
memory: 50580kb
input:
100000 746699125678 374834842799 250803643493 620187038832 454433387570 406226564003 897157438699 99473514061 734784419618 503968957100 363935477037 277126009840 52078020050 990757079812 847235285349 950784717285 271017141367 861087225700 996035427219 520682200664 282013988419 415183977876 882007771...
output:
secret: XBNN6R0Jnospxlfz11GWxd4ldkzb0I -2107951553 2073433607 -719908681 154383900 1167153117 -2018454462 1687864735 -146851567 147970310 -1672352742 -838358963 -1661611425 -1995550398 7302154 696766358 558013976 1298794569 -2073810122 -3015178 -1565532667 -2113847924 -1654505964 1835860175 -1435483...
result:
wrong answer 2nd lines differ - expected: '1148030742334', found: '-2107951553'
Subtask #3:
score: 0
Skipped
Dependency #1:
0%
Subtask #4:
score: 0
Time Limit Exceeded
Test #69:
score: 0
Time Limit Exceeded
input:
100000 15175010 23519365 21177669 27079342 9089 16784452 29693960 23124925 17048604 10179491 12828214 24992902 8483134 2928073 23807522 7332137 17421520 28460746 1607282 13224363 11900728 11794692 11495061 4687109 23460275 7657982 27417256 16978162 7326803 23083826 24942987 16610314 12147303 2828271...
output:
Unauthorized output
result:
Subtask #5:
score: 0
Time Limit Exceeded
Test #94:
score: 0
Time Limit Exceeded
input:
99281 551670361798 568902251563 418071776626 697635341894 641578820039 117221079324 812766431051 425410617978 663769685693 282144284527 799662290178 749088952784 586626406385 122473825417 459510657357 871705247919 443707710712 735612808044 237919555727 829939639783 122127143240 616906466299 24431898...
output:
Unauthorized output
result:
Subtask #6:
score: 0
Skipped
Dependency #1:
0%