제출 #591885

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
591885		Do_you_copy	운세 보기 2 (JOI14_fortune_telling2)	C++17	100 / 100	219 ms	18076 KiB

fortune_telling2

#include <bits/stdc++.h>
#define taskname "test"
#define fi first
#define se second
#define pb push_back
#define faster ios_base::sync_with_stdio(0); cin.tie(0);
using namespace std;
using ll = long long;
using pii = pair <int, int>;
using pil = pair <int, ll>;
using pli = pair <ll, int>;
using pll = pair <ll, ll>;
using ull = unsigned ll;
mt19937 Rand(chrono::steady_clock::now().time_since_epoch().count());

ll min(const ll &a, const ll &b){
    return (a < b) ? a : b;
}

ll max(const ll &a, const ll &b){
    return (a > b) ? a : b;
}

//const ll Mod = 1000000009;
//const ll Mod2 = 999999999989;
//only use when required
const int maxN = 2e5 + 2;

int n, k;

struct TCard{
    int high, low, idx;
};

struct TQ{
    int val, idx1, idx2;
};

TQ flip[maxN];
TCard b[maxN];
int bit[maxN];
int bit2[maxN];
vector <pii> t;
pii a[maxN];
int c[maxN];
int cnt[maxN];
int cnt1[maxN];

void update(int xx, int val){
    int x = upper_bound(t.begin(), t.end(), xx,[](const auto &i, const auto &j){
        return i < j.first;
    }) - t.begin();
    for (; x; x -= x & -x){
        bit[x] = max(bit[x], val);
    }
}

void update2(int xx, int val){
    int x = upper_bound(t.begin(), t.end(), xx,[](const auto &i, const auto &j){
        return i < j.first;
    }) - t.begin();
    x = t.size() - x + 1;
    for (; x <= t.size(); x += x & -x){
        bit2[x] += val;
    }
}

int get(int xx){
    int x = lower_bound(t.begin(), t.end(), xx,[](const auto &i, const auto &j){
        return i.fi < j;
    }) - t.begin() + 1;
    ll res = 0;
    for (; x <= t.size(); x += x & -x){
        res = max(res, bit[x]);
    }
    return res;
}

int get2(int xx){
    int x = lower_bound(t.begin(), t.end(), xx,[](const auto &i, const auto &j){
        return i.fi < j;
    }) - t.begin() + 1;
    x = t.size() - x + 1;
    ll res = 0;
    for (; x; x -= x & -x){
        res += bit2[x];
    }
    return res;
}

void Init(){
    cin >> n >> k;
    for (int i = 1; i <= n; ++i){
        cin >> a[i].fi >> a[i].se;
        b[i].low = min(a[i].fi, a[i].se);
        b[i].high = max(a[i].fi, a[i].se);
        b[i].idx = i;
    }
    for (int i = 1; i <= k; ++i){
        cin >> c[i];
        t.pb({c[i], i});
    }
    sort(t.begin(), t.end());
    t.resize(unique(t.begin(), t.end()) - t.begin());
    sort(b + 1, b + n + 1,[](const auto &i, const auto &j){
        return i.high < j.high;
    });
    int j = 1;
    for (int i = 1; i <= n; ++i){
        while (j <= k && t[j - 1].fi < b[i].high){
            update(t[j - 1].fi, t[j - 1].se);
            ++j;
        }
        flip[b[i].idx] = {get(b[i].low), b[i].idx, i};
    }
    sort(flip + 1, flip + n + 1,[](const auto &i, const auto &j){
        return i.val > j.val;
    });
    j = k;
    for (int i = 1; i <= n; ++i){
        while (j > 0 && j > flip[i].val){
            update2(c[j], 1);
            --j;
        }
        cnt[flip[i].idx1] = get2(b[flip[i].idx2].high);
        cnt1[flip[i].idx1] = flip[i].val;
    }
    ll answer = 0;
    for (int i = 1; i <= n; ++i){
        if (cnt1[i]){
            if (cnt[i] % 2) answer += min(a[i].fi, a[i].se);
            else answer += max(a[i].fi, a[i].se);
        }
        else{
            if (cnt[i] % 2) answer += a[i].se;
            else answer += a[i].fi;
        }
    }
    cout << answer;
}


int main(){
    if (fopen(taskname".inp", "r")){
        freopen(taskname".inp", "r", stdin);
        //freopen(taskname".out", "w", stdout);
    }
    faster;
    ll tt = 1;
    //cin >> tt;
    while (tt--){
        Init();
    }
}

컴파일 시 표준 에러 (stderr) 메시지

fortune_telling2.cpp: In function 'void update2(int, int)':
fortune_telling2.cpp:63:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |     for (; x <= t.size(); x += x & -x){
      |            ~~^~~~~~~~~~~
fortune_telling2.cpp: In function 'int get(int)':
fortune_telling2.cpp:73:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |     for (; x <= t.size(); x += x & -x){
      |            ~~^~~~~~~~~~~
fortune_telling2.cpp: In function 'int main()':
fortune_telling2.cpp:145:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  145 |         freopen(taskname".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 31 / 31
• Subtask 3: 65 / 65