oj.uz

Submission #1089974

# Submission time Handle Problem Language Result Execution time Memory
1089974 2024-09-17T12:57:00 Z vjudge1 Kpart (eJOI21_kpart) C++17
100 / 100
 1034 ms 2032 KB 
/**
 *    data : 09.07.2024  
 *     
**/
#include <bits/stdc++.h>
// #include "algo/turnikmen.h"

using namespace std;


#define int long long
#define bitt __builtin_popcountll
#define bitzero __builtin_clz

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
// #pragma GCC optimize("-funsafe-loop-optimizations") 
#pragma GCC optimize("-funroll-loops") 
// #pragma GCC optimize("-fwhole-program") 
#pragma GCC optimize("Ofast,no-stack-protector") 
#pragma GCC optimize("-fthread-jumps") 
#pragma GCC optimize("-falign-functions") 
#pragma GCC optimize("-falign-jumps") 
#pragma GCC optimize("-falign-loops") 
#pragma GCC optimize("-falign-labels") 
#pragma GCC optimize("-fcaller-saves") 
#pragma GCC optimize("-fcrossjumping") 
#pragma GCC optimize("-fcse-follow-jumps") 
// #pragma GCC optimize("-fcse-skip-blocks") 
#pragma GCC optimize("-fdelete-null-pointer-checks") 
#pragma GCC optimize("-fdevirtualize") 
#pragma GCC optimize("-fexpensive-optimizations") 
#pragma GCC optimize("-fgcse") 
#pragma GCC optimize("-fgcse-lm") 
#pragma GCC optimize("-fhoist-adjacent-loads") 
#pragma GCC optimize("-finline-small-functions") 
#pragma GCC optimize("-findirect-inlining") 
#pragma GCC optimize("-fipa-sra") 
#pragma GCC optimize("-foptimize-sibling-calls") 
#pragma GCC optimize("-fpartial-inlining") 
#pragma GCC optimize("-fpeephole2") 
#pragma GCC optimize("-freorder-blocks") 
#pragma GCC optimize("-freorder-functions") 
#pragma GCC optimize("-frerun-cse-after-loop") 
#pragma GCC optimize("-fsched-interblock") 
#pragma GCC optimize("-fsched-spec") 
#pragma GCC optimize("-fschedule-insns") 
#pragma GCC optimize("-fschedule-insns2") 
#pragma GCC optimize("-fstrict-aliasing") 
// #pragma GCC optimize("-fstrict-overflow") 
#pragma GCC optimize("-ftree-switch-conversion") 
#pragma GCC optimize("-ftree-tail-merge") 
#pragma GCC optimize("-ftree-pre") 
#pragma GCC optimize("-ftree-vrp") 
#pragma GCC target("avx")

void fReopen () {
        #ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
        #endif
}



signed main (/*  time : 9:17 AM   */) {
        ios_base::sync_with_stdio(false);
        cin.tie(nullptr);
        cout.tie(nullptr);
 
       
        int t; cin >> t;
        while (t --> 0) {
                int n; cin >> n;
                vector<int> a(n);
                for (auto &x : a) cin >> x;
                vector<int> valid(n + 1, 1);
                const int N = 1e5 + 3;
                int dp[N], pref[N];
                for (int i = 0; i <= n; i++) pref[i] = dp[i] = 0;
                pref[0] = 0;
                for (int i = 1; i <= n; i++) {
                        pref[i] = pref[i - 1] + a[i - 1];
                }
                for (int i = 0; i <= pref[n]; i++) dp[i] = 0;
                for (int i = 1; i <= n; i++) {
                        for (int j = pref[n]; j >= a[i - 1]; j--) {
                                dp[j] = max(dp[j], dp[j - a[i - 1]]);
                        }
                        dp[a[i - 1]] = i;
                        for (int j = 1; j <= i - 1; j++) {
                                int sum = pref[i] - pref[j - 1];
                                if (sum % 2 != 0 || dp[sum / 2] < j)/* cout << i - j + 1 << ' ', */valid[i - j + 1] = 0;
                        }
                }
                vector<int> ans;
                for (int i = 2; i <= n; i++) if (valid[i]) ans.push_back(i);
                cout << ans.size() << ' ';
                for (auto to : ans) cout << to << ' ';
                cout << endl;
        }
}

Compilation message

Main.cpp: In function 'void fReopen()':
Main.cpp:59:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 |         freopen("input.txt", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
Main.cpp:60:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   60 |         freopen("output.txt", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1880 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1880 KB Output is correct
2 Correct 15 ms 1884 KB Output is correct

Subtask #3
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 1884 KB Output is correct
2 Correct 151 ms 2024 KB Output is correct
3 Correct 174 ms 1880 KB Output is correct
4 Correct 316 ms 1884 KB Output is correct
5 Correct 729 ms 2032 KB Output is correct
6 Correct 1034 ms 2028 KB Output is correct
7 Correct 919 ms 1884 KB Output is correct