Submission #592955

#	Time	Username	Problem	Language	Result	Execution time	Memory
592955		TimDee	Kpart (eJOI21_kpart)	C++14	100 / 100	1901 ms	391396 KiB

Main

#include <bits/stdc++.h>
using namespace std;
 
#define paiu return
#define moment 0;
 
#define int long long
#define double long double
#define ll long long

#define forr(i,x) for (int i=0; i<x; i++)
#define forn(i,x) for (int i=0; i<x; i++)

#define vi(a,n) vector<int> a(n,0)
 
//cringe define
#define vii(a,n) vi(a,n); forr(i,n) cin>>a[i];
vector<int> ___makeprefsum(vector<int>&a) {
    int n=a.size();
    vi(pr,n+1);
    forn(i,n) pr[i+1]=pr[i]+a[i];
    return pr;
}
#define prefsum(pr,a) vector<int> pr=___makeprefsum(a);
 
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
 
#define pb(x) push_back(x)
#define pf pop_front();
#define last(c) c[c.size()-1]
 
#define f first
#define s second
 
#define pi pair<int, int>
#define mp(x,y) make_pair(x, y)
 
const ll mod = 1000000007;
const double ppi = acos(0) * 2;
     
const int maxn = 2e5;
const int inf = INT_MAX;
const ll linf = LLONG_MAX;
const ll mmod = 998244353;

int dp[1000][50001];

void solve() {
    
    int n; cin>>n; vii(a,n);
    vector<int> pr = ___makeprefsum(a);

    dp[0][a[0]]=0;
    for (int i=1; i<n; ++i) {
        for (int j=1; j<=(pr[n]+1)/2; ++j) {
            if (j==a[i]) {dp[i][j]=i; continue;}
            dp[i][j]=dp[i-1][j];
            if (j-a[i]>=0) dp[i][j]=max(dp[i][j],dp[i-1][j-a[i]]);
        }
    }

    vector<int> ans;
    for (int k=2; k<=n; ++k) {
        int foo=1;
        for (int i=0; i+k<=n; ++i) {
            int s = pr[i+k]-pr[i];
            if (s%2) {foo=0; break;}
            if (dp[i+k-1][s/2]<i) {foo=0; break;}
        }
        if (foo) ans.pb(k);
    }
    cout<<ans.size()<<' ';
    forn(i,ans.size()) cout<<ans[i]<<' '; cout<<'\n';
    dp[0][a[0]]=-1;
}

int32_t main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
 
    //init_primes();
    
    forn(i,5e4+1) dp[0][i]=-1;
    int t=1;
    cin>>t;
    while(t--) solve();
    
    paiu moment
}

Compilation message (stderr)

Main.cpp: In function 'void solve()':
Main.cpp:12:34: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   12 | #define forn(i,x) for (int i=0; i<x; i++)
......
   74 |     forn(i,ans.size()) cout<<ans[i]<<' '; cout<<'\n';
      |          ~~~~~~~~~~~~             
Main.cpp:74:5: note: in expansion of macro 'forn'
   74 |     forn(i,ans.size()) cout<<ans[i]<<' '; cout<<'\n';
      |     ^~~~
Main.cpp:12:19: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   12 | #define forn(i,x) for (int i=0; i<x; i++)
      |                   ^~~
Main.cpp:74:5: note: in expansion of macro 'forn'
   74 |     forn(i,ans.size()) cout<<ans[i]<<' '; cout<<'\n';
      |     ^~~~
Main.cpp:74:43: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   74 |     forn(i,ans.size()) cout<<ans[i]<<' '; cout<<'\n';
      |                                           ^~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 70 / 70