oj.uz

Submission #49054

# Submission time Handle Problem Language Result Execution time Memory
49054 2018-05-21T14:41:21 Z BThero New Home (APIO18_new_home) C++17
0 / 100
 5000 ms 72800 KB 
// Why am I so stupid? :c
#include <bits/stdc++.h>

#define pb push_back
#define mp make_pair

#define all(x) (x).begin(), (x).end()

#define fi first
#define se second

typedef long long ll;

using namespace std;

const int MAXN = 3e5+5;

const int INF = 1e9;

struct shop {
    int x, tp, l, r;

    shop() {
        x = tp = l = r = 0;
    }
} arr[MAXN];

struct que {
    int x, t, id;

    que() {
        x = t = id = 0;
    }
} req[MAXN];

vector < pair <int, int> > addEl[MAXN * 2];

vector < pair <int, int> > delEl[MAXN * 2];

multiset < pair <int, int> > ms;

vector <int> mm[MAXN];

int rl[MAXN * 2];

int ans[MAXN];

int mn[MAXN];

int n, k, q;

int m, m2;

void compressX() {
    vector <int> vv;

    for (int i = 1; i <= n; ++i) {
        vv.pb(arr[i].x);
    }

    for (int i = 1; i <= q; ++i) {
        vv.pb(req[i].x);
    }

    sort(all(vv));
    vv.resize(unique(all(vv)) - vv.begin());

    m2 = vv.size();

    for (int i = 1, ps; i <= n; ++i) {
        ps = upper_bound(all(vv), arr[i].x) - vv.begin();
        rl[ps] = arr[i].x;
        arr[i].x = ps;
    }

    for (int i = 1, ps; i <= q; ++i) {
        ps = upper_bound(all(vv), req[i].x) - vv.begin();
        rl[ps] = req[i].x;
        req[i].x = ps;
    }
}

bool cmp(que a, que b) {
    return a.x < b.x;
}

bool cmp2(shop a, shop b) {
    return a.x < b.x;
}

void solve() {
    scanf("%d %d %d", &n, &k, &q);

    for (int i = 1; i <= n; ++i) {
        scanf("%d %d", &arr[i].x, &arr[i].tp);
        scanf("%d %d", &arr[i].l, &arr[i].r);
    }

    for (int i = 1; i <= q; ++i) {
        scanf("%d %d", &req[i].x, &req[i].t);
        req[i].id = i;
    }

    compressX();

    sort(arr + 1, arr + n + 1, cmp2);
    sort(req + 1, req + q + 1, cmp);

    for (int i = 1; i <= n; ++i) {
        mm[arr[i].tp].pb(arr[i].x);
    }

    bool ex = 0;

    for (int i = 1; i <= k; ++i) {
        if (mm[i].empty()) {
            ex = 1;
        }
    }

    if (ex) {
        for (int i = 1; i <= q; ++i) {
            printf("-1\n");
        }

        return;
    }

    for (int i = 1; i <= k; ++i) {
        addEl[1].pb(mp(0, mm[i][0]));
        delEl[mm[i][0]].pb(mp(0, mm[i][0]));

        for (int j = 0; j < mm[i].size(); ++j) {
            int nxt = m2 + 1;

            if (j + 1 < mm[i].size()) {
                nxt = mm[i][j + 1];
            }

            addEl[mm[i][j]].pb(mp(mm[i][j], nxt));
            delEl[nxt].pb(mp(mm[i][j], nxt));
        }
    }

    int ptr = 1;

    for (int i = 1; i <= m2; ++i) {
        for (auto it : addEl[i]) {
            ms.insert(it);
        }

        for (auto it : delEl[i]) {
            ms.erase(ms.find(it));
        }

        while (ptr <= q && req[ptr].x == i) {
            for (auto it : ms) {
                int curD = INF;

                if (it.fi > 0) {
                    curD = min(curD, rl[i] - rl[it.fi]);
                }

                if (it.se <= m2) {
                    curD = min(curD, rl[it.se] - rl[i]);
                }

                ans[req[ptr].id] = max(ans[req[ptr].id], curD);
            }

            ++ptr;
        }
    }

    for (int i = 1; i <= q; ++i) {
        if (ans[i] == INF) {
            ans[i] = -1;
        }

        printf("%d\n", ans[i]);
    }
}

int main() {
#ifdef BThero
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif // BThero

    int tt = 1;

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

    return 0;
}

Compilation message

new_home.cpp: In function 'void solve()':
new_home.cpp:133:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for (int j = 0; j < mm[i].size(); ++j) {
                         ~~^~~~~~~~~~~~~~
new_home.cpp:136:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if (j + 1 < mm[i].size()) {
                 ~~~~~~^~~~~~~~~~~~~~
new_home.cpp:92:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d %d", &n, &k, &q);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:95:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &arr[i].x, &arr[i].tp);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:96:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &arr[i].l, &arr[i].r);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
new_home.cpp:100:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d", &req[i].x, &req[i].t);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 43896 KB Output is correct
2 Incorrect 38 ms 43896 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 43896 KB Output is correct
2 Incorrect 38 ms 43896 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5022 ms 72800 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 23.0

# Verdict Execution time Memory Grader output
1 Execution timed out 5030 ms 72800 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 43896 KB Output is correct
2 Incorrect 38 ms 43896 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 43896 KB Output is correct
2 Incorrect 38 ms 43896 KB Output isn't correct
3 Halted 0 ms 0 KB -