Submission #1069014

#	Time	Username	Problem	Language	Result	Execution time	Memory
1069014		Boycl07	Secret (JOI14_secret)	C++17	Compilation error	0 ms	0 KiB

secret

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;

#define int ll
#define rep(i, n) for(int i = 1; (i) <= (n); ++i)
#define forn(i, l, r) for(int i = (l); i <= (r); ++i)
#define ford(i, r, l) for(int i = (r); i >= (l); --i)
#define FOR(i, n) for(int i = 0; i < (n); ++i)
#define FORD(i, n) for(int i = ((n) - 1); i >= 0; --i)
#define fi first
#define se second
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pb push_back
#define endl "\n"
#define task "FFILL"
#define sz(a) int(a.size())
#define C(x, y) make_pair(x, y)
#define all(a) (a).begin(), (a).end()
#define bit(i, mask) (mask >> i & 1)

template<typename T> bool maximize(T &res, const T &val) { if (res < val){ res = val; return true; }; return false; }
template<typename T> bool minimize(T &res, const T &val) { if (res > val){ res = val; return true; }; return false; }


const int N = 1e5 + 3;
const int LIM = (1 << 16) + 3;
const ll INF = 1e18 + 1;
const int LOG = 19;

int s;

struct SegTree
{
    ll st[N << 1];
    int n;

    void init()
    {
        rep(i, 2 * s) st[i] = INF;
    }

    void update(int pos, ll val)
    {
        for(minimize(st[pos += s], val); pos >>= 1; ) st[pos] = min(st[pos << 1], st[pos << 1 | 1]);
    }

    ll get(int l, int r)
    {
        ll res = INF;
        for(l += s, r += s + 1; l < r; l >>= 1, r >>= 1)
        {
            if(l & 1) minimize(res, st[l++]);
            if(r & 1) minimize(res, st[--r]);
        }
        return res;
    }
} St_left, St_right;

int n, m;

int a[N], b[N], c[N], d[N];

vector<int> zip;

int st[N][LOG + 1], pos[N];
int num_hint = 0;
int secret(int x, int y) {num_hint++; return x + y;}



void dnc(int l, int r, int stage)
{
    if(l == r) return;

    int mid = l + r >> 1;
    st[mid][stage] = a[mid];
    st[mid + 1][stage] = a[mid + 1]; pos[mid + 1] |= (1 << stage);
    ford(i, mid - 1, l) st[i][stage] = secret(a[i], st[i + 1][stage]);
    forn(i, mid + 2, r) st[i][stage] = secret(st[i - 1][stage], a[i]), pos[i] |= (1 << stage);
    dnc(l, mid, stage + 1);
    dnc(mid + 1, r, stage + 1);
}

void solve()
{
    cin >> n;

    dnc(1, n, 0);

    cout << num_hint << endl;

}

signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    int TC = 1;

    if(fopen("note.inp", "r"))
    {
        freopen("note.inp", "r", stdin);
        freopen("note.out", "w", stdout);
    }


    while(TC--)
    {
        solve();
    }

    return 0;
}

Compilation message (stderr)

secret.cpp: In function 'void dnc(ll, ll, ll)':
secret.cpp:78:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   78 |     int mid = l + r >> 1;
      |               ~~^~~
secret.cpp: In function 'int main()':
secret.cpp:106:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  106 |         freopen("note.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
secret.cpp:107:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  107 |         freopen("note.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccQFhXNe.o: in function `main':
secret.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccOTmYne.o:grader.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccOTmYne.o: in function `main':
grader.cpp:(.text.startup+0x2a8): undefined reference to `Init(int, int*)'
/usr/bin/ld: grader.cpp:(.text.startup+0x30b): undefined reference to `Query(int, int)'
collect2: error: ld returned 1 exit status