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답안 #365591

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
365591 2021-02-11T22:26:33 Z mat_v Examination (JOI19_examination) C++14
0 / 100
 245 ms 15620 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/rope>

#define ff(i,a,b) for(int (i) = (a); (i) <= (b); ++(i))
#define fb(i,a,b) for(int (i) = (a); (i) >= (b); --(i))
#define mod 998244353
#define xx first
#define yy second
#define all(a) (a).begin(), (a).end()
#define pb push_back
#define ll long long
#define pii pair<int,int>
#define N 100005

using namespace std;
using namespace __gnu_pbds;
typedef tree<int, null_type, less<int>,rb_tree_tag, tree_order_statistics_node_update> ordered_set;/// find_by_order(x)(x+1th) , order_of_key() (strictly less)
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());


int n,q;
pii niz[N];
struct upit{
    int x,y,z;
    int idx;
}kv[N];



map<int, int>slika;

bool cmp(pii a, pii b){
    return a.xx > b.xx;
}

int ans[N];
int br;
int bit[10 * N][2];
void dodaj(int x, int idx){
    while(x > 0){
        bit[x][idx]++;
        x -= (x&-x);
    }
}
int query(int x, int idx){
    int sol = 0;
    while(x <= 100001){
        sol += bit[x][idx];
        x += (x&-x);
    }
    return sol;
}

struct fw{
    int idx;
    int poz;
    int znk;
    int val;
    int zakoju;
};

bool cmp2(fw a, fw b){
    return a.poz < b.poz;
}

int dokle(int x){
    if(x > niz[1].xx)return 0;
    if(x <= niz[n].xx)return n;
    int l = 1;
    int r = n;
    while(l < r){
        int mid = (l + r + 1) / 2;
        if(niz[mid].xx >= x)l = mid;
        else r = mid - 1;
    }
    return l;
}


vector<fw> v;

int main()
{

    ios_base::sync_with_stdio(false); cin.tie(0);
    vector<int> svi;

    cin >> n >> q;
    ff(i,1,n){
        cin >> niz[i].xx >> niz[i].yy;
        svi.pb(niz[i].xx);
        svi.pb(niz[i].yy);
        svi.pb(niz[i].xx + niz[i].yy);
    }
    sort(niz + 1, niz + n + 1, cmp);
    ff(i,1,q){
        int a,b,c;
        cin >> a >> b >> c;
        int prvi = dokle(a);
        int drugi = dokle(c - b);
        assert(prvi == n || niz[prvi + 1].xx < a);
        assert(prvi == 0 || niz[prvi].xx >= a);
        if(c - b <= a){
            v.pb({0,prvi,1,b,i});
        }
        else{
            assert(false);
            v.pb({0,drugi,1,b,i});
            if(drugi < prvi){
                v.pb({1,drugi,-1,c,i});
                v.pb({1,prvi,1,c,i});
            }
        }
        kv[i].x = a;
        kv[i].y = b;
        kv[i].z = c;
        svi.pb(a);
        svi.pb(b);
        svi.pb(c);
    }
    sort(svi.begin(), svi.end());
    int last = -1;
    for(auto c:svi){
        if(c == last)continue;
        br++;
        slika[c] = br;
        last = c;
    }

    sort(v.begin(), v.end(), cmp2);

    int tr = 0;
    ff(i,1,n){
        dodaj(niz[i].yy + 1, 0);
        dodaj(slika[niz[i].xx + niz[i].yy], 1);
        while(1){
            int sta = v.size();
            if(tr == sta)break;
            if(v[tr].poz > i)break;
            ans[v[tr].zakoju] += (v[tr].znk)*query(v[tr].val + 1,v[tr].idx);
            tr++;
        }
    }
    ff(i,1,q)cout << ans[i] << "\n";


    return 0;
}
/*
5 1
35 100
70 70
45 15
80 40
20 95
20 50 120



*/

Compilation message

examination.cpp: In function 'int main()':
examination.cpp:6:27: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
    6 | #define ff(i,a,b) for(int (i) = (a); (i) <= (b); ++(i))
      |                           ^
examination.cpp:91:5: note: in expansion of macro 'ff'
   91 |     ff(i,1,n){
      |     ^~
examination.cpp:6:27: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
    6 | #define ff(i,a,b) for(int (i) = (a); (i) <= (b); ++(i))
      |                           ^
examination.cpp:98:5: note: in expansion of macro 'ff'
   98 |     ff(i,1,q){
      |     ^~
examination.cpp:6:27: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
    6 | #define ff(i,a,b) for(int (i) = (a); (i) <= (b); ++(i))
      |                           ^
examination.cpp:135:5: note: in expansion of macro 'ff'
  135 |     ff(i,1,n){
      |     ^~
examination.cpp:6:27: warning: unnecessary parentheses in declaration of 'i' [-Wparentheses]
    6 | #define ff(i,a,b) for(int (i) = (a); (i) <= (b); ++(i))
      |                           ^
examination.cpp:146:5: note: in expansion of macro 'ff'
  146 |     ff(i,1,q)cout << ans[i] << "\n";
      |     ^~

Subtask #1
0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 2 ms 492 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 230 ms 15448 KB Output is correct
2 Correct 245 ms 15448 KB Output is correct
3 Correct 245 ms 15572 KB Output is correct
4 Correct 175 ms 13200 KB Output is correct
5 Correct 176 ms 13224 KB Output is correct
6 Correct 115 ms 9304 KB Output is correct
7 Correct 234 ms 15248 KB Output is correct
8 Correct 236 ms 15620 KB Output is correct
9 Correct 215 ms 15320 KB Output is correct
10 Incorrect 175 ms 12632 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 230 ms 15448 KB Output is correct
2 Correct 245 ms 15448 KB Output is correct
3 Correct 245 ms 15572 KB Output is correct
4 Correct 175 ms 13200 KB Output is correct
5 Correct 176 ms 13224 KB Output is correct
6 Correct 115 ms 9304 KB Output is correct
7 Correct 234 ms 15248 KB Output is correct
8 Correct 236 ms 15620 KB Output is correct
9 Correct 215 ms 15320 KB Output is correct
10 Incorrect 175 ms 12632 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 2 ms 492 KB Execution killed with signal 6
2 Halted 0 ms 0 KB -