# |
제출 시각 |
아이디 |
문제 |
언어 |
결과 |
실행 시간 |
메모리 |
788023 |
2023-07-19T16:27:13 Z |
ymm |
저울 (IOI15_scales) |
C++17 |
|
36 ms |
424 KB |
#include "scales.h"
#include <bits/stdc++.h>
#define Loop(x,l,r) for (int x = (l); x < (r); ++x)
using namespace std;
typedef array<int, 6> perm;
int whichval3(int *v, int x) {
return (v[1] == x) + 2*(v[2] == x);
}
tuple<int,int,int> srt(const perm &p, int a, int b, int c) {
if (p[a] > p[b]) swap(a, b);
if (p[b] > p[c]) swap(b, c);
if (p[a] > p[b]) swap(a, b);
return {a, b, c};
}
int mn(const perm &p, int *v) {
auto [x, y, z] = srt(p, v[0], v[1], v[2]);
return whichval3(v, x);
}
int mx(const perm &p, int *v) {
auto [x, y, z] = srt(p, v[0], v[1], v[2]);
return whichval3(v, z);
}
int med(const perm &p, int *v) {
auto [x, y, z] = srt(p, v[0], v[1], v[2]);
return whichval3(v, y);
}
int nxt(const perm &p, int *v) {
auto [x, y, z] = srt(p, v[0], v[1], v[2]);
if (p[v[3]] < p[x]) return whichval3(v, x);
if (p[v[3]] < p[y]) return whichval3(v, y);
if (p[v[3]] < p[z]) return whichval3(v, z);
return whichval3(v, x);
}
vector<vector<int>> sel3;
vector<vector<int>> sel4;
vector<perm> perms;
template<int (*f)(int, int, int)> int f3(int *v) { return f(v[0]+1, v[1]+1, v[2]+1)-1; }
template<int (*f)(int, int, int, int)> int f4(int *v) { return f(v[0]+1, v[1]+1, v[2]+1, v[3]+1)-1; }
int (*f2q(int (*f)(const perm &, int *)))(int *) {
if (f == mn) return f3<getLightest>;
if (f == mx) return f3<getHeaviest>;
if (f == med) return f3<getMedian>;
if (f == nxt) return f4<getNextLightest>;
return NULL;
}
perm solve(const vector<perm> &ps)
{
if (ps.size() == 1)
return ps[0];
tuple<int, array<vector<perm>, 3>, int (*)(int *), int *> ch;
get<0>(ch) = INT_MAX;
for (auto f : {nxt, med, mn, mx}) {
auto &selx = f == nxt? sel4: sel3;
for (auto &sel : selx) {
array<vector<perm>, 3> vec;
for (const auto &p : ps)
vec[f(p, sel.data())].push_back(p);
int x = max({vec[0].size(), vec[1].size(), vec[2].size()});
if (x < get<0>(ch))
ch = {x, vec, f2q(f), sel.data()};
}
}
auto [_, chvec, chf, chin] = ch;
int x = chf(chin);
int i = whichval3(chin, x);
return solve(chvec[i]);
}
void init(int T) {
Loop (i,0,6) Loop (j,i+1,6) Loop (k,j+1,6)
sel3.push_back({i, j, k});
Loop (d,0,6) Loop (i,0,6) Loop (j,i+1,6) Loop (k,j+1,6) {
if (i != d && j != d && k != d)
sel4.push_back({i, j, k, d});
}
perm p = {0, 1, 2, 3, 4, 5};
do {
perms.push_back(p);
} while (next_permutation(p.begin(), p.end()));
}
void orderCoins() {
auto ans = solve(perms);
int w[6];
Loop (i,0,6)
w[ans[i]] = i+1;
answer(w);
}
Compilation message
scales.cpp: In function 'perm solve(const std::vector<std::array<int, 6> >&)':
scales.cpp:65:15: warning: conversion from 'long unsigned int' to 'int' may change value [-Wconversion]
65 | int x = max({vec[0].size(), vec[1].size(), vec[2].size()});
| ~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
scales.cpp: In function 'void init(int)':
scales.cpp:76:15: warning: unused parameter 'T' [-Wunused-parameter]
76 | void init(int T) {
| ~~~~^
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
30 ms |
400 KB |
Output is correct |
2 |
Correct |
29 ms |
424 KB |
Output is correct |
3 |
Correct |
30 ms |
404 KB |
Output is correct |
4 |
Correct |
30 ms |
408 KB |
Output is correct |
5 |
Correct |
29 ms |
416 KB |
Output is correct |
6 |
Correct |
30 ms |
412 KB |
Output is correct |
7 |
Correct |
29 ms |
408 KB |
Output is correct |
8 |
Correct |
30 ms |
412 KB |
Output is correct |
9 |
Correct |
31 ms |
340 KB |
Output is correct |
10 |
Correct |
34 ms |
408 KB |
Output is correct |
11 |
Correct |
33 ms |
412 KB |
Output is correct |
12 |
Correct |
30 ms |
340 KB |
Output is correct |
13 |
Correct |
29 ms |
340 KB |
Output is correct |
14 |
Correct |
30 ms |
340 KB |
Output is correct |
15 |
Correct |
29 ms |
340 KB |
Output is correct |
16 |
Correct |
29 ms |
412 KB |
Output is correct |
17 |
Correct |
29 ms |
304 KB |
Output is correct |
18 |
Correct |
29 ms |
340 KB |
Output is correct |
19 |
Correct |
29 ms |
340 KB |
Output is correct |
20 |
Correct |
30 ms |
412 KB |
Output is correct |
21 |
Correct |
33 ms |
396 KB |
Output is correct |
22 |
Correct |
30 ms |
340 KB |
Output is correct |
23 |
Correct |
30 ms |
340 KB |
Output is correct |
24 |
Correct |
30 ms |
408 KB |
Output is correct |
25 |
Correct |
29 ms |
292 KB |
Output is correct |
26 |
Correct |
29 ms |
340 KB |
Output is correct |
27 |
Correct |
30 ms |
340 KB |
Output is correct |
28 |
Correct |
34 ms |
408 KB |
Output is correct |
29 |
Correct |
30 ms |
340 KB |
Output is correct |
30 |
Correct |
30 ms |
416 KB |
Output is correct |
31 |
Correct |
30 ms |
380 KB |
Output is correct |
32 |
Correct |
30 ms |
340 KB |
Output is correct |
33 |
Correct |
30 ms |
416 KB |
Output is correct |
34 |
Correct |
30 ms |
340 KB |
Output is correct |
35 |
Correct |
29 ms |
412 KB |
Output is correct |
36 |
Correct |
30 ms |
340 KB |
Output is correct |
37 |
Correct |
36 ms |
340 KB |
Output is correct |
38 |
Correct |
33 ms |
372 KB |
Output is correct |
39 |
Correct |
29 ms |
340 KB |
Output is correct |
40 |
Correct |
34 ms |
392 KB |
Output is correct |