oj.uz

Submission #966222

# Submission time Handle Problem Language Result Execution time Memory
966222 2024-04-19T14:26:51 Z vjudge1 XORanges (eJOI19_xoranges) C++17
30 / 100
 1000 ms 7396 KB 
#include <bits/stdc++.h>
using namespace std;

#define ff(i, a, b) for(auto i=(a); i<=(b); ++i)
#define ffr(i, b, a) for(auto i=(b); i>=(a); --i)
#define nl "\n"
#define ss " "
#define sz size()
#define pb emplace_back
#define pf push_front
#define fi first
#define se second
#define ms(a,x) memset(a, x, sizeof (a))
#define re exit(0)

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef vector<int> vi;
typedef vector<ll> vll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<pair<int, int> > vpii;
typedef vector<pair<ll, ll> > vpll;

const ll mod=1e9+7, maxn=3e5+5, inf=1e18;

void rf(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    if(fopen("o.inp","r")){
        freopen("o.inp","r",stdin); freopen("o.out","w",stdout);
    }
}

int n, q, a[maxn], f[5005][5005];

int main()
{
    rf();
    cin>>n>>q;
    ff(i, 1, n) cin>>a[i];
    ff(i, 1, n) ff(j, i, n) ff(k, i, j) f[i][j]^=a[k];
    while(q--)
    {
        int op, l, r; cin>>op>>l>>r;
        if(op==1) a[l]=r;
        else
        {
            if(n<=100)
            {
                int ans=0;
                ff(i, l, r) ff(j, i, r) ff(k, i, j) ans^=a[k];
                cout<<ans<<nl;
            }
            else if(n<=500)
            {
                int ans=0;
                ff(i, l, r) ff(j, i, r) ans^=f[i][j];
                cout<<ans<<nl;
            }
        }
    }
    re;
}

Compilation message

xoranges.cpp: In function 'void rf()':
xoranges.cpp:32:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |         freopen("o.inp","r",stdin); freopen("o.out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~
xoranges.cpp:32:44: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |         freopen("o.inp","r",stdin); freopen("o.out","w",stdout);
      |                                     ~~~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2908 KB Output is correct
2 Correct 1 ms 2908 KB Output is correct
3 Correct 1 ms 2908 KB Output is correct
4 Correct 4 ms 2916 KB Output is correct
5 Correct 4 ms 2908 KB Output is correct

Subtask #2
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 4956 KB Output is correct
2 Correct 14 ms 5024 KB Output is correct
3 Correct 15 ms 5024 KB Output is correct
4 Correct 37 ms 5004 KB Output is correct
5 Correct 36 ms 4996 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2908 KB Output is correct
2 Correct 1 ms 2908 KB Output is correct
3 Correct 1 ms 2908 KB Output is correct
4 Correct 4 ms 2916 KB Output is correct
5 Correct 4 ms 2908 KB Output is correct
6 Correct 14 ms 4956 KB Output is correct
7 Correct 14 ms 5024 KB Output is correct
8 Correct 15 ms 5024 KB Output is correct
9 Correct 37 ms 5004 KB Output is correct
10 Correct 36 ms 4996 KB Output is correct
11 Execution timed out 1071 ms 7396 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1027 ms 3024 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2908 KB Output is correct
2 Correct 1 ms 2908 KB Output is correct
3 Correct 1 ms 2908 KB Output is correct
4 Correct 4 ms 2916 KB Output is correct
5 Correct 4 ms 2908 KB Output is correct
6 Correct 14 ms 4956 KB Output is correct
7 Correct 14 ms 5024 KB Output is correct
8 Correct 15 ms 5024 KB Output is correct
9 Correct 37 ms 5004 KB Output is correct
10 Correct 36 ms 4996 KB Output is correct
11 Execution timed out 1071 ms 7396 KB Time limit exceeded
12 Halted 0 ms 0 KB -