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QOJ
| ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
|---|---|---|---|---|---|---|---|---|---|
| #575692 | #21566. 四维偏序 | jeffqi | Compile Error | / | / | C++17 | 2.2kb | 2024-09-19 16:18:11 | 2024-09-19 16:18:12 |
Judging History
answer
#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/hash_policy.hpp>
#define ll long long
#define all(v) v.begin(),v.end()
#define sz(v) ((ll)v.size())
#define V vector
#define vi V<int>
#define vll V<ll>
#define eb emplace_back
#define pii pair<int,int>
#define pll pair<ll,ll>
#define fi first
#define se second
#define A array
#define pb push_back
#define mset multiset
#define gpumap __gnu_pbds::gp_hash_table
#define ccumap __gnu_pbds::cc_hash_table
#define ui unsigned int
#define ull unsigned ll
#define i128 __int128
#define cerr if (test) cerr
#define freopen if (test) freopen
#define whtest if (test)
using namespace std;
const int test = 0;
namespace jhsy {
template<class F,class Cmp>
void solve(span<int> vec,int d,vi &cnt,int m,F &&f,Cmp &&cmp) {
if (sz(vec) == 1) {
return;
}
if (d == m) {
return f(vec,cnt);
}
const int n = sz(vec),mid = n/2;
span<int> vl(vec.begin(),vec.begin()+mid);
vi vr(vec.begin()+mid,vec.end());
solve(vl,d,cnt,m,f,cmp);
solve(vr,d,cnt,m,f,cmp);
vi tmp(n);
ranges::merge(vl,vr,tmp.begin(),cmp(d));
for (int i = 0; i < n; i++) {
vec[i] = tmp[i];
}
for (auto x:vr) {
cnt[x]++;
}
solve(tmp,d+1,cnt,m,f,cmp);
for (auto x:vr) {
cnt[x]--;
}
}
template<class F,class Cmp>
void solve(int n,int m,F &&f,Cmp &&cmp) {
if (!n || !m) {
return;
}
vi vec(n),cnt(n);
iota(all(vec),0);
sort(all(vec),cmp(0));
solve(vec,1,cnt,m,f,cmp);
}
const int D = 4;
void main() {
int n;
cin >> n;
V<A<int,D>> a(n);
for (auto &p:a) {
for (auto &x:p) {
cin >> x;
}
}
ll ans = 0;
solve(n,D,[&](span<int> vec,const vi &cnt) {
int k = 0;
for (auto x:vec) {
if (!cnt[x]) {
k++;
}
if (cnt[x] == D-1) {
ans += k;
}
}
},[&](int d) {
return [&,d](int x,int y) {
return a[x][d] < a[y][d];
};
});
cout << ans << '\n';
}
}
int main() {
freopen("test.in","r",stdin);
freopen("test.out","w",stdout);
ios::sync_with_stdio(false);
cin.tie(nullptr);
cout << fixed << setprecision(20);
// jhsy::init();
int T = 1;
// cin >> T;
while (T--) {
jhsy::main();
}
return 0;
}
详细
answer.code:32:14: error: variable or field ‘solve’ declared void
32 | void solve(span<int> vec,int d,vi &cnt,int m,F &&f,Cmp &&cmp) {
| ^~~~~
answer.code:32:20: error: ‘span’ was not declared in this scope
32 | void solve(span<int> vec,int d,vi &cnt,int m,F &&f,Cmp &&cmp) {
| ^~~~
answer.code:32:20: note: ‘std::span’ is only available from C++20 onwards
answer.code:32:25: error: expected primary-expression before ‘int’
32 | void solve(span<int> vec,int d,vi &cnt,int m,F &&f,Cmp &&cmp) {
| ^~~
answer.code:32:34: error: expected primary-expression before ‘int’
32 | void solve(span<int> vec,int d,vi &cnt,int m,F &&f,Cmp &&cmp) {
| ^~~
answer.code:32:43: error: expected primary-expression before ‘&’ token
32 | void solve(span<int> vec,int d,vi &cnt,int m,F &&f,Cmp &&cmp) {
| ^
answer.code:32:44: error: ‘cnt’ was not declared in this scope; did you mean ‘int’?
32 | void solve(span<int> vec,int d,vi &cnt,int m,F &&f,Cmp &&cmp) {
| ^~~
| int
answer.code:32:48: error: expected primary-expression before ‘int’
32 | void solve(span<int> vec,int d,vi &cnt,int m,F &&f,Cmp &&cmp) {
| ^~~
answer.code:32:56: error: expected primary-expression before ‘&&’ token
32 | void solve(span<int> vec,int d,vi &cnt,int m,F &&f,Cmp &&cmp) {
| ^~
answer.code:32:58: error: ‘f’ was not declared in this scope
32 | void solve(span<int> vec,int d,vi &cnt,int m,F &&f,Cmp &&cmp) {
| ^
answer.code:32:64: error: expected primary-expression before ‘&&’ token
32 | void solve(span<int> vec,int d,vi &cnt,int m,F &&f,Cmp &&cmp) {
| ^~
answer.code:32:66: error: ‘cmp’ was not declared in this scope; did you mean ‘Cmp’?
32 | void solve(span<int> vec,int d,vi &cnt,int m,F &&f,Cmp &&cmp) {
| ^~~
| Cmp
answer.code: In function ‘void jhsy::main()’:
answer.code:78:31: error: ‘span’ has not been declared
78 | solve(n,D,[&](span<int> vec,const vi &cnt) {
| ^~~~
answer.code:78:35: error: expected ‘,’ or ‘...’ before ‘<’ token
78 | solve(n,D,[&](span<int> vec,const vi &cnt) {
| ^
answer.code: In lambda function:
answer.code:80:37: error: ‘vec’ was not declared in this scope
80 | for (auto x:vec) {
| ^~~
answer.code:81:38: error: ‘cnt’ was not declared in this scope; did you mean ‘int’?
81 | if (!cnt[x]) {
| ^~~
| int
answer.code:84:37: error: ‘cnt’ was not declared in this scope; did you mean ‘int’?
84 | if (cnt[x] == D-1) {
| ^~~
| int
answer.code: In instantiation of ‘void jhsy::solve(int, int, F&&, Cmp&&) [with F = main()::<lambda(int)>; Cmp = main()::<lambda(int)>]’:
answer.code:78:8: required from here
answer.code:65:22: error: no matching function for call to ‘solve(std::vector<int>&, int, std::vector<int>&, int&, jhsy::main()::<lambda(int)>&, jhsy::main()::<lambda(int)>&)’
65 | solve(vec,1,cnt,m,f,cmp);
| ~~~~~^~~~~~~~~~~~~~~~~~~
answer.code:58:14: note: candidate: ‘template<class F, class Cmp> void jhsy::solve(int, int, F&&, Cmp&&)’
58 | void solve(int n,int m,F &&f,Cmp &&cmp) {
| ^~~~~
answer.code:58:14: note: template argument deduction/substitution failed:
answer.code:65:22: note: candidate expects 4 arguments, 6 provided
65 | solve(vec,1,cnt,m,f,cmp);
| ~~~~~^~~~~~~~~~~~~~~~~~~
answer.code: In function ‘int main()’:
answer.code:98:16: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
98 | freopen("test.in","r",stdin);
| ^
answer.code:99:16: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
99 | freopen("test.out","w",stdout);
| ^