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Submission #879984

# Submission time Handle Problem Language Result Execution time Memory
879984 2023-11-28T13:39:03 Z cpptowin Examination (JOI19_examination) C++17
100 / 100
 1107 ms 27132 KB 
#include<bits/stdc++.h>
#define fo(i,d,c) for(int i=d;i<=c;i++)
#define fod(i,c,d) for(int i=c;i>=d;i--)
#define maxn 1000010
#define N 1010
#define fi first
#define se second
#define pb emplace_back
#define en cout<<"\n";
//#define int long long
#define inf 1000000000
#define pii pair<int,int>
#define vii vector<pii>
#define lb(x) x&-x
#define bit(i,j) ((i>>j)&1)
#define offbit(i,j) (i^(1<<j))
#define onbit(i,j) (i|(1<<j))
#define vi vector<int>
template <typename T1, typename T2> bool minimize(T1 &a, T2 b)
{
    if (a > b)
    {
        a = b;
        return true;
    }
    return false;
}
template <typename T1, typename T2> bool maximize(T1 &a, T2 b)
{
    if (a < b)
    {
        a = b;
        return true;
    }
    return false;
}
using namespace std;
struct BIT
{
    int t[maxn];
    void up(int x,int val)
    {
        x++;
        for( ; x < maxn ; x += lb(x)) t[x] += val;
    }
    int get(int x)
    {
        int ans = 0;
        for( ; x ; x -= lb(x)) ans += t[x];
        return ans;
    }
} t1;
const int BLOCK = 500;
struct query
{
    int A, B, C, id;
    bool operator < (query y)
    {
        return make_pair(A / BLOCK, B) < make_pair(y.A / BLOCK, y.B);
    }
};
vector<query> v;
int n,q;
vii v1,v2;
vi v3;
int nen[maxn],s[maxn],t[maxn],cnt[maxn],ans[maxn];
main()
{
#define name "TASK"
    if(fopen(name".inp","r"))
    {
        freopen(name".inp","r",stdin);
        freopen(name".out","w",stdout);
    }
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n >> q;
    fo(i,1,n)
    {
        cin >> s[i] >> t[i];
        v1.push_back({s[i], i});
        v2.push_back({t[i], i});
        v3.push_back(s[i] + t[i]);
    }
    sort(v1.begin(),v1.end());
    sort(v2.begin(),v2.end());
    sort(v3.begin(),v3.end());
//    for(int it : v3) cout << it << ' ';
//    en;
    fo(i,1,n) nen[i] = lower_bound(v3.begin(),v3.end(),s[i] + t[i]) - v3.begin();
    fo(i,1,q)
    {
        int A,B,C;
        cin >> A >> B >> C;
//        cout << A << ' ' << B << ' ' << C << "\n";
        int x = lower_bound(v1.begin(),v1.end(),make_pair(A, 0)) - v1.begin();
        int y = lower_bound(v2.begin(),v2.end(),make_pair(B,0)) - v2.begin();
        int z = lower_bound(v3.begin(),v3.end(),C) - v3.begin();
//        cout << x << ' ' << y << ' ' << z << "\n";
        v.push_back({x,y,z,i});
    }
    sort(v.begin(),v.end());
    int l = n,r = n;
//    fo(i,0,n - 1) cout << cnt[i] << ' ' ;
//    en;
    for(auto [A,B,C,id] : v)
    {
//        cout << A << ' ' << B << ' ' << C << ' ' << id << ' ' << l << ' ' << r << "\n";
        while(A < l)
        {
            cnt[v1[l - 1].se]++;
//            cout << v1[l - 1].se << "\n";
            if(cnt[v1[l - 1].se] == 2) t1.up(nen[v1[l - 1].se],1);
            l--;
        }
        while(A > l)
        {
//            cout << "ccc";
//            en;
            cnt[v1[l].se]--;
            if(cnt[v1[l].se] == 1) t1.up(nen[v1[l].se],-1);
            l++;
        }
        while(B < r)
        {
            cnt[v2[r - 1].se]++;
            if(cnt[v2[r - 1].se] == 2) t1.up(nen[v2[r - 1].se],1);
            r--;
        }
        while(B > r)
        {
            cnt[v2[r].se]--;
            if(cnt[v2[r].se] == 1) t1.up(nen[v2[r].se],-1);
            r++;
        }
//        cout << l << ' ' << r << "\n";
//        fo(i,1,n) cout << cnt[i] << ' ';
//        en;
        ans[id] = t1.get(maxn - 3) - t1.get(C);
    }
    fo(i,1,q) cout << ans[i] << "\n";
}

Compilation message

examination.cpp:67:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   67 | main()
      | ^~~~
examination.cpp: In function 'int main()':
examination.cpp:72:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   72 |         freopen(name".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
examination.cpp:73:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   73 |         freopen(name".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 12636 KB Output is correct
2 Correct 2 ms 12636 KB Output is correct
3 Correct 2 ms 12636 KB Output is correct
4 Correct 2 ms 12636 KB Output is correct
5 Correct 2 ms 12632 KB Output is correct
6 Correct 2 ms 12636 KB Output is correct
7 Correct 12 ms 13148 KB Output is correct
8 Correct 14 ms 13144 KB Output is correct
9 Correct 15 ms 13148 KB Output is correct
10 Correct 13 ms 12940 KB Output is correct
11 Correct 12 ms 13092 KB Output is correct
12 Correct 10 ms 13032 KB Output is correct
13 Correct 12 ms 12892 KB Output is correct
14 Correct 12 ms 12892 KB Output is correct
15 Correct 12 ms 12912 KB Output is correct
16 Correct 4 ms 12892 KB Output is correct
17 Correct 12 ms 12932 KB Output is correct
18 Correct 4 ms 12892 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1052 ms 24612 KB Output is correct
2 Correct 1048 ms 24860 KB Output is correct
3 Correct 1039 ms 24456 KB Output is correct
4 Correct 827 ms 23872 KB Output is correct
5 Correct 133 ms 23928 KB Output is correct
6 Correct 98 ms 23032 KB Output is correct
7 Correct 395 ms 24492 KB Output is correct
8 Correct 497 ms 24520 KB Output is correct
9 Correct 434 ms 24316 KB Output is correct
10 Correct 103 ms 23596 KB Output is correct
11 Correct 828 ms 23620 KB Output is correct
12 Correct 54 ms 22776 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1052 ms 24612 KB Output is correct
2 Correct 1048 ms 24860 KB Output is correct
3 Correct 1039 ms 24456 KB Output is correct
4 Correct 827 ms 23872 KB Output is correct
5 Correct 133 ms 23928 KB Output is correct
6 Correct 98 ms 23032 KB Output is correct
7 Correct 395 ms 24492 KB Output is correct
8 Correct 497 ms 24520 KB Output is correct
9 Correct 434 ms 24316 KB Output is correct
10 Correct 103 ms 23596 KB Output is correct
11 Correct 828 ms 23620 KB Output is correct
12 Correct 54 ms 22776 KB Output is correct
13 Correct 1071 ms 25048 KB Output is correct
14 Correct 1069 ms 24876 KB Output is correct
15 Correct 1026 ms 24612 KB Output is correct
16 Correct 844 ms 24060 KB Output is correct
17 Correct 156 ms 24060 KB Output is correct
18 Correct 103 ms 23040 KB Output is correct
19 Correct 1107 ms 25048 KB Output is correct
20 Correct 1079 ms 25024 KB Output is correct
21 Correct 656 ms 24976 KB Output is correct
22 Correct 91 ms 23544 KB Output is correct
23 Correct 841 ms 23600 KB Output is correct
24 Correct 54 ms 22672 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 12636 KB Output is correct
2 Correct 2 ms 12636 KB Output is correct
3 Correct 2 ms 12636 KB Output is correct
4 Correct 2 ms 12636 KB Output is correct
5 Correct 2 ms 12632 KB Output is correct
6 Correct 2 ms 12636 KB Output is correct
7 Correct 12 ms 13148 KB Output is correct
8 Correct 14 ms 13144 KB Output is correct
9 Correct 15 ms 13148 KB Output is correct
10 Correct 13 ms 12940 KB Output is correct
11 Correct 12 ms 13092 KB Output is correct
12 Correct 10 ms 13032 KB Output is correct
13 Correct 12 ms 12892 KB Output is correct
14 Correct 12 ms 12892 KB Output is correct
15 Correct 12 ms 12912 KB Output is correct
16 Correct 4 ms 12892 KB Output is correct
17 Correct 12 ms 12932 KB Output is correct
18 Correct 4 ms 12892 KB Output is correct
19 Correct 1052 ms 24612 KB Output is correct
20 Correct 1048 ms 24860 KB Output is correct
21 Correct 1039 ms 24456 KB Output is correct
22 Correct 827 ms 23872 KB Output is correct
23 Correct 133 ms 23928 KB Output is correct
24 Correct 98 ms 23032 KB Output is correct
25 Correct 395 ms 24492 KB Output is correct
26 Correct 497 ms 24520 KB Output is correct
27 Correct 434 ms 24316 KB Output is correct
28 Correct 103 ms 23596 KB Output is correct
29 Correct 828 ms 23620 KB Output is correct
30 Correct 54 ms 22776 KB Output is correct
31 Correct 1071 ms 25048 KB Output is correct
32 Correct 1069 ms 24876 KB Output is correct
33 Correct 1026 ms 24612 KB Output is correct
34 Correct 844 ms 24060 KB Output is correct
35 Correct 156 ms 24060 KB Output is correct
36 Correct 103 ms 23040 KB Output is correct
37 Correct 1107 ms 25048 KB Output is correct
38 Correct 1079 ms 25024 KB Output is correct
39 Correct 656 ms 24976 KB Output is correct
40 Correct 91 ms 23544 KB Output is correct
41 Correct 841 ms 23600 KB Output is correct
42 Correct 54 ms 22672 KB Output is correct
43 Correct 1061 ms 27132 KB Output is correct
44 Correct 1106 ms 27012 KB Output is correct
45 Correct 1065 ms 26956 KB Output is correct
46 Correct 845 ms 25432 KB Output is correct
47 Correct 157 ms 25328 KB Output is correct
48 Correct 102 ms 23020 KB Output is correct
49 Correct 403 ms 26876 KB Output is correct
50 Correct 526 ms 26884 KB Output is correct
51 Correct 471 ms 26868 KB Output is correct
52 Correct 110 ms 25092 KB Output is correct
53 Correct 811 ms 24564 KB Output is correct