oj.uz

Submission #874460

# Submission time Handle Problem Language Result Execution time Memory
874460 2023-11-17T05:34:45 Z Requiem Examination (JOI19_examination) C++17
2 / 100
 3000 ms 260108 KB 
#include<bits/stdc++.h>
//#define int long long
#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
#define pb push_back
#define fast ios_base::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
#define MOD 1000000007
#define INF 1e18
#define fi first
#define se second
#define FOR(i,a,b) for(int i=a;i<=b;i++)
#define FORD(i,a,b) for(int i=a;i>=b;i--)
#define sz(a) ((int)(a).size())
#define endl '\n'
#define all(a) a.begin(),a.end()
#define pi 3.14159265359
#define TASKNAME "examination"
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; }
using namespace std;
typedef pair<int,int> ii;
typedef pair<int,ii> iii;
typedef vector<int> vi;
typedef pair<ii,ii> iv;
const int MAXN = 1e5+9;
const int block = 316;
const int MAXBLOCK = 320;
int n,q,x,start,b;
iv score[MAXN], original[MAXN];
int BIT[513][6*MAXN],nxt[6*MAXN],prep[MAXN],rev[MAXN],cnt[MAXN],answer[MAXN];
vector<int> listval;
vector<iv> query;
void upd(int block,int id,int x){
    for(int i=id;i>0;i-=i&(-i)){
        BIT[block][i] += x;
    }
}
int get(int block,int id){
    int res = 0;
    for(int i=id;i<=listval.size();i+=i&(-i)){
        res += BIT[block][i];
    }
    return res;
}
int bs(int l,int r,int x){
    int res = r+1;
    while(l<=r){
        int mid = (l+r)>>1;
        if (original[mid].se.fi >= x){
            res = mid;
            r = mid - 1;
        }
        else l = mid + 1;
    }
    return res;
}
main()
{
    fast;
    if (fopen(TASKNAME".inp","r")){
        freopen(TASKNAME".inp","r",stdin);
        freopen(TASKNAME".out","w",stdout);
    }
    cin>>n>>q;
    for(int i=1;i<=n;i++){
        cin>>score[i].se.fi>>score[i].se.se;
        score[i].fi.se = score[i].se.fi + score[i].se.se;
        listval.pb(score[i].se.fi);
        listval.pb(score[i].se.se);
        listval.pb(score[i].fi.se);
    }
    sort(score+1,score+1+n,[](const iv &a,const iv &b){
         return a.se.fi < b.se.fi;
    });

    for(int i=1;i<=q;i++){
        int x,y,z;
        cin>>x>>y>>z;
        listval.pb(x);
        listval.pb(y);
        listval.pb(z);
        query.pb({{i,x},{y,z}});
    }
    sort(listval.begin(),listval.end());
    listval.erase(unique(listval.begin(),listval.end()),listval.end());
    for(int i=1;i<=max(q,n);i++){
        if (i<=n){
            score[i].se.fi = lower_bound(all(listval),score[i].se.fi) - listval.begin() + 1;
            score[i].se.se = lower_bound(all(listval),score[i].se.se) - listval.begin() + 1;
            score[i].fi.se = lower_bound(all(listval),score[i].fi.se) - listval.begin() + 1;
        }
        if (i<=q){
            query[i-1].se.fi = lower_bound(all(listval),query[i-1].se.fi) - listval.begin() + 1;
            query[i-1].se.se = lower_bound(all(listval),query[i-1].se.se) - listval.begin() + 1;
            query[i-1].fi.se = lower_bound(all(listval),query[i-1].fi.se) - listval.begin() + 1;
        }
    }
    for(int i=1;i<=n;i++){
        score[i].fi.fi = i;
        original[i] = score[i];
    }
    int ptr = 1;
    for(int i=1;i<=listval.size();i++){
        while(ptr <= n and original[ptr].se.fi < i){
            ptr++;
        }
        if (ptr<=n) nxt[i] = original[ptr].fi.fi;
        else nxt[i] = n+1;
    }
    sort(query.begin(),query.end(),[](const iv &a,const iv &b){
         return a.se.se > b.se.se;
    });
    sort(score+1,score+1+n,[](const iv &a,const iv &b){
         return a.fi.se > b.fi.se;
    });
    for(int i=1;i<MAXN;i++){
        prep[i] = i / block;
    }
    ptr = 1;
    for(int i=0;i<query.size();i++){
        while(ptr <= n and score[ptr].fi.se >= query[i].se.se){
            int RealIndex = score[ptr].fi.fi;
            rev[RealIndex]++;
            int b = prep[RealIndex];
            cnt[b]++;

            upd(b,score[ptr].se.se,1);
            ptr++;
        }
        start = nxt[query[i].fi.se];
        b = prep[start];
        for(int j=start;j<=n;j++){
            if (original[j].se.fi >= query[i].fi.se and
                original[j].se.se >= query[i].se.fi and
                original[j].fi.se >= query[i].se.se and
                rev[j] > 0){
                    answer[query[i].fi.fi]++;
            }
            if (prep[j] != prep[j+1]) {
                break;
            }
        }

        for(int cur=b+1;cur<MAXBLOCK;cur++){
            if (cur * block > n) break;
            if (cnt[cur] == 0) continue;
            answer[query[i].fi.fi] += get(cur,query[i].se.fi);
        }

    }
    for(int i=1;i<=q;i++){
        cout<<answer[i]<<endl;
    }
}

Compilation message

examination.cpp:4: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    4 | #pragma GCC optimization ("O3")
      | 
examination.cpp:5: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    5 | #pragma GCC optimization ("unroll-loops")
      | 
examination.cpp: In function 'int get(int, int)':
examination.cpp:41:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   41 |     for(int i=id;i<=listval.size();i+=i&(-i)){
      |                  ~^~~~~~~~~~~~~~~~
examination.cpp: At global scope:
examination.cpp:58:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   58 | main()
      | ^~~~
examination.cpp: In function 'int main()':
examination.cpp:104:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  104 |     for(int i=1;i<=listval.size();i++){
      |                 ~^~~~~~~~~~~~~~~~
examination.cpp:121:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<std::pair<int, int>, std::pair<int, int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  121 |     for(int i=0;i<query.size();i++){
      |                 ~^~~~~~~~~~~~~
examination.cpp:62:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |         freopen(TASKNAME".inp","r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
examination.cpp:63:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   63 |         freopen(TASKNAME".out","w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 2 ms 8540 KB Output is correct
5 Correct 1 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 12 ms 29400 KB Output is correct
8 Correct 11 ms 29588 KB Output is correct
9 Correct 10 ms 29532 KB Output is correct
10 Correct 8 ms 27484 KB Output is correct
11 Correct 9 ms 29532 KB Output is correct
12 Correct 7 ms 27364 KB Output is correct
13 Correct 9 ms 29784 KB Output is correct
14 Correct 9 ms 29532 KB Output is correct
15 Correct 9 ms 29532 KB Output is correct
16 Correct 7 ms 27476 KB Output is correct
17 Correct 7 ms 27484 KB Output is correct
18 Correct 5 ms 27228 KB Output is correct

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1835 ms 255132 KB Output is correct
2 Correct 1764 ms 257468 KB Output is correct
3 Correct 1829 ms 260108 KB Output is correct
4 Correct 701 ms 164320 KB Output is correct
5 Correct 1700 ms 254204 KB Output is correct
6 Correct 209 ms 165532 KB Output is correct
7 Execution timed out 3040 ms 258108 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1835 ms 255132 KB Output is correct
2 Correct 1764 ms 257468 KB Output is correct
3 Correct 1829 ms 260108 KB Output is correct
4 Correct 701 ms 164320 KB Output is correct
5 Correct 1700 ms 254204 KB Output is correct
6 Correct 209 ms 165532 KB Output is correct
7 Execution timed out 3040 ms 258108 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8540 KB Output is correct
2 Correct 1 ms 8540 KB Output is correct
3 Correct 1 ms 8540 KB Output is correct
4 Correct 2 ms 8540 KB Output is correct
5 Correct 1 ms 8540 KB Output is correct
6 Correct 1 ms 8540 KB Output is correct
7 Correct 12 ms 29400 KB Output is correct
8 Correct 11 ms 29588 KB Output is correct
9 Correct 10 ms 29532 KB Output is correct
10 Correct 8 ms 27484 KB Output is correct
11 Correct 9 ms 29532 KB Output is correct
12 Correct 7 ms 27364 KB Output is correct
13 Correct 9 ms 29784 KB Output is correct
14 Correct 9 ms 29532 KB Output is correct
15 Correct 9 ms 29532 KB Output is correct
16 Correct 7 ms 27476 KB Output is correct
17 Correct 7 ms 27484 KB Output is correct
18 Correct 5 ms 27228 KB Output is correct
19 Correct 1835 ms 255132 KB Output is correct
20 Correct 1764 ms 257468 KB Output is correct
21 Correct 1829 ms 260108 KB Output is correct
22 Correct 701 ms 164320 KB Output is correct
23 Correct 1700 ms 254204 KB Output is correct
24 Correct 209 ms 165532 KB Output is correct
25 Execution timed out 3040 ms 258108 KB Time limit exceeded
26 Halted 0 ms 0 KB -