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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#73137 | #4401. Prize | 12345678 | 0 | 0ms | 0kb | C++14 | 2.8kb | 2023-01-22 13:32:18 | 2023-01-22 13:32:20 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define int long long
#define mp make_pair
#define inf 1e9
#define pii pair <int, int>
const int mod = 1e9 + 7;
inline int read () {
int x = 0, f = 1;
char ch = getchar ();
while (ch < '0' || ch > '9') f = ((ch == '-') ? -1 : f), ch = getchar ();
while (ch >= '0' && ch <= '9') x = x * 10 + ch - '0', ch = getchar ();
return x * f;
}
inline void write (int x) {
if (x < 0) x = -x, putchar ('-');
if (x >= 10) write (x / 10);
putchar (x % 10 + '0');
}
int n, k, Q, T;
struct Tree {
int Fa[1000005], Rt;
vector <int> G[1000005];
int dep[1000005], siz[1000005], son[1000005], top[1000005];
int dfn[1000005], seq[1000005], tot;
void dfs(int x, int fa) {
dfn[x] = ++tot, seq[tot] = x;
dep[x] = dep[fa] + 1;
siz[x] = 1;
for(auto y : G[x]) {
dfs(y, x);
siz[x] += siz[y];
if(!son[x] || siz[y] > siz[son[x]]) son[x] = y;
}
}
void dfs2(int x) {
int fa = Fa[x];
if(son[fa] == x) top[x] = top[fa];
else top[x] = x;
if(son[x]) dfs2(son[x]);
for(auto y : G[x]) if(y != son[x]) dfs2(y);
}
int LCA(int x, int y) {
while(top[x] != top[y]) {
if(dep[top[x]] < dep[top[y]]) swap(x, y);
x = Fa[top[x]];
}
if(dep[x] > dep[y]) swap(x, y);
return x;
}
void init() {
for(int i = 1; i <= n; i++) {
Fa[i] = read();
if(Fa[i] == -1) Rt = i;
else G[Fa[i]].push_back(i);
}
dfs(Rt, 0), dfs2(Rt);
}
vector <pii> V[1000005];
void add(int x, int y) {
int e = read();
V[x].push_back(mp(y, e));
V[y].push_back(mp(x, -e));
}
int vis[1000005], dis[1000005];
void dfs3(int x, int e) {
if(vis[x]) return ;
vis[x] = 1, dis[x] = e;
for(auto y : V[x]) dfs3(y.first, e + y.second);
}
int Dis(int x, int y) {
int lca = LCA(x, y);
return dis[x] + dis[y] - 2 * dis[lca];
}
}T1, T2;
int a[1000005];
signed main () {
// freopen (".in", "r", stdin);
// freopen (".out", "w", stdout);
n = read(), k = read(), Q = read(), T = read();
T1.init(), T2.init();
for(int i = 1; i <= k; i++) a[i] = T2.seq[i];
sort(a + 1, a + 1 + k, [&] (int A, int B) {return T1.dfn[A] < T1.dfn[B];});
for(int i = 1; i <= k; i++) write(a[i]), putchar(' ');
putchar('\n'), fflush(stdout);
for(int i = 1; i < k; i++) write(a[i]), putchar(' '), write(a[i+1]), putchar('\n');
puts("!"), fflush(stdout);
for(int i = 1; i < k; i++) {
int lca1 = T1.LCA(a[i], a[i+1]), lca2 = T2.LCA(a[i], a[i+1]);
T1.add(lca1, a[i]), T1.add(lca1, a[i+1]), T2.add(lca2, a[i]), T2.add(lca2, a[i+1]);
}
for(int i = 1; i <= k; i++) T1.dfs3(a[i], 0);
sort(a + 1, a + 1 + k, [&] (int A, int B) {return T2.dfn[A] < T2.dfn[B];});
for(int i = 1; i <= k; i++) T2.dfs3(a[i], 0);
while(T--) {
int x = read(), y = read();
write(T1.Dis(x, y)), putchar(' '), write(T2.Dis(x, y)), putchar('\n');
}
fflush(stdout);
return 0;
}
/*
*/
Details
Tip: Click on the bar to expand more detailed information
Subtask #1:
score: 0
Time Limit Exceeded
Test #1:
score: 0
Time Limit Exceeded
input:
500000 64682 64681 100000 46115 470589 209303 2979 473162 343535 79503 299539 404621 102085 237721 279170 392890 165201 441593 456314 218991 358478 86614 410800 159785 169761 95368 285837 297549 370283 378974 26449 444381 39320 149913 404523 144109 174828 263837 49847 468694 478535 152644 216598 301...
output:
422989 414496 290928 388223 160563 301045 470257 259625 222733 231286 345214 169817 435263 277447 386014 210139 455433 225855 264772 199736 355788 288506 233893 146148 454958 267562 498596 183745 352665 151125 266374 43142 9414 204593 212097 311775 25324 300764 6643 94847 396968 428563 311355 255767...
result:
Subtask #2:
score: 0
Time Limit Exceeded
Test #13:
score: 0
Time Limit Exceeded
input:
500000 88721 177440 100000 30974 23891 211201 125199 180489 387190 218020 498838 230147 307989 484136 257785 353027 304420 311738 169842 334090 486070 126212 328609 174959 368840 238722 418092 488389 226349 427271 457322 332454 12958 197530 264474 355717 482774 221286 282148 216441 266659 213750 628...
output:
63742 263216 146169 50728 199716 469441 459156 322328 152164 66876 274063 180006 237497 208598 249207 359435 96669 110070 41714 147909 214779 59127 151892 216797 194356 199621 20899 418742 198323 158340 163745 123748 85656 172672 123919 47108 313725 12227 183377 183933 348552 102798 184923 290145 17...
result:
Subtask #3:
score: 0
Time Limit Exceeded
Test #25:
score: 0
Time Limit Exceeded
input:
500000 200 199 40000 76296 130139 291501 292412 139543 433345 372726 451574 18315 465578 324564 477223 237354 81532 65170 465332 342130 9670 193303 193680 129668 149532 268907 89969 398275 356210 324593 433492 482232 466692 135343 433758 102545 287283 432859 351864 305769 489532 101532 450535 295762...
output:
464387 27779 146694 443858 405500 46371 375328 183696 253669 95388 173896 183797 18073 431275 140576 468877 345574 227090 361228 17134 261985 60381 64649 124883 275006 345205 205047 166559 173438 437370 498046 158980 365732 106698 145138 342120 407307 83109 296453 316074 219468 97176 251586 177490 2...
result:
Subtask #4:
score: 0
Time Limit Exceeded
Test #37:
score: 0
Time Limit Exceeded
input:
1000000 1000 999 100000 678746 439069 32542 85937 936926 284219 461661 203235 533462 940676 230275 621140 780674 254931 562355 229273 201341 493976 358955 963527 880412 91220 474599 160086 698841 591551 718276 844558 39859 765917 34722 401724 219774 443004 682244 545401 968419 968020 354030 411187 1...
output:
927453 237540 859419 982835 971518 506285 771618 939329 16802 700671 845162 359776 499849 958003 722555 893539 667107 399090 361260 56054 518738 929831 330952 261064 845434 378738 416383 813166 332967 155083 279300 603715 217430 73563 278581 71462 840056 191244 422478 38987 402361 21178 733103 92045...
result:
Subtask #5:
score: 0
Skipped
Dependency #4:
0%