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Submission #540946

# Submission time Handle Problem Language Result Execution time Memory
540946 2022-03-22T03:58:34 Z krit3379 Examination (JOI19_examination) C++17
100 / 100
 187 ms 10904 KB 
#include<bits/stdc++.h>
using namespace std;
#define N 100005

int fen[N],s[N],t[N],so[N],to[N],x[N],y[N],z[N],ans[N];
pair<int,int> p[N];
vector<pair<int,int>> q;

void update(int x,int k){
    while(x<N){
        fen[x]+=k;
        x+=x&-x;
    }
}

int sol(int x){
    int ans=0;
    while(x){
        ans+=fen[x];
        x-=x&-x;
    }
    return ans;
}

int main(){
    int n,m,i,k,now;
    scanf("%d %d",&n,&m);
    for(i=1;i<=n;i++)scanf("%d %d",&s[i],&t[i]),p[i]={s[i],i},so[i]=s[i],to[i]=t[i];
    for(i=1;i<=m;i++)scanf("%d %d %d",&x[i],&y[i],&z[i]);
    sort(p+1,p+n+1);
    sort(so+1,so+n+1);
    sort(to+1,to+n+1);
    for(i=1;i<=m;i++)
        if(x[i]+y[i]>=z[i])q.push_back({x[i],i});
    sort(q.begin(),q.end());
    now=n;
    for(i=q.size()-1;i>=0;i--){
        while(now&&p[now].first>=q[i].first){
            update(lower_bound(to+1,to+n+1,t[p[now].second])-to,1);
            now--;
        }
        ans[q[i].second]=sol(n)-sol(lower_bound(to+1,to+n+1,y[q[i].second])-to-1);
    }
    q.clear();
    for(i=1;i<=n;i++)p[i]={s[i]+t[i],i};
    sort(p+1,p+n+1);
    for(i=1;i<=m;i++)
        if(x[i]+y[i]<z[i])q.push_back({z[i],i});
    sort(q.begin(),q.end());
    for(k=0;k<2;k++){
        for(i=0;i<=n;i++)fen[i]=0;
        now=n;
        for(i=q.size()-1;i>=0;i--){
            while(now&&p[now].first>=q[i].first){
                if(k)update(lower_bound(so+1,so+n+1,s[p[now].second])-so,1);
                else update(lower_bound(to+1,to+n+1,t[p[now].second])-to,1);
                now--;
            }
            if(k)ans[q[i].second]+=n-now;
            if(k)ans[q[i].second]-=sol(lower_bound(so+1,so+n+1,x[q[i].second])-so-1);
            else ans[q[i].second]-=sol(lower_bound(to+1,to+n+1,y[q[i].second])-to-1);
        }
    }
    for(i=1;i<=m;i++)printf("%d\n",ans[i]);
    return 0;
}

Compilation message

examination.cpp: In function 'int main()':
examination.cpp:27:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |     scanf("%d %d",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~~
examination.cpp:28:27: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |     for(i=1;i<=n;i++)scanf("%d %d",&s[i],&t[i]),p[i]={s[i],i},so[i]=s[i],to[i]=t[i];
      |                      ~~~~~^~~~~~~~~~~~~~~~~~~~~
examination.cpp:29:27: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |     for(i=1;i<=m;i++)scanf("%d %d %d",&x[i],&y[i],&z[i]);
      |                      ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
2.0 / 2.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 316 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 4 ms 576 KB Output is correct
8 Correct 5 ms 576 KB Output is correct
9 Correct 5 ms 580 KB Output is correct
10 Correct 5 ms 596 KB Output is correct
11 Correct 6 ms 544 KB Output is correct
12 Correct 4 ms 468 KB Output is correct
13 Correct 4 ms 580 KB Output is correct
14 Correct 4 ms 576 KB Output is correct
15 Correct 4 ms 596 KB Output is correct
16 Correct 4 ms 596 KB Output is correct
17 Correct 4 ms 596 KB Output is correct
18 Correct 3 ms 572 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 127 ms 8476 KB Output is correct
2 Correct 125 ms 8488 KB Output is correct
3 Correct 159 ms 8540 KB Output is correct
4 Correct 103 ms 7756 KB Output is correct
5 Correct 112 ms 7784 KB Output is correct
6 Correct 91 ms 7060 KB Output is correct
7 Correct 159 ms 8444 KB Output is correct
8 Correct 123 ms 8624 KB Output is correct
9 Correct 120 ms 8372 KB Output is correct
10 Correct 105 ms 7636 KB Output is correct
11 Correct 96 ms 7612 KB Output is correct
12 Correct 64 ms 6704 KB Output is correct

Subtask #3
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 127 ms 8476 KB Output is correct
2 Correct 125 ms 8488 KB Output is correct
3 Correct 159 ms 8540 KB Output is correct
4 Correct 103 ms 7756 KB Output is correct
5 Correct 112 ms 7784 KB Output is correct
6 Correct 91 ms 7060 KB Output is correct
7 Correct 159 ms 8444 KB Output is correct
8 Correct 123 ms 8624 KB Output is correct
9 Correct 120 ms 8372 KB Output is correct
10 Correct 105 ms 7636 KB Output is correct
11 Correct 96 ms 7612 KB Output is correct
12 Correct 64 ms 6704 KB Output is correct
13 Correct 172 ms 8572 KB Output is correct
14 Correct 175 ms 8800 KB Output is correct
15 Correct 124 ms 8524 KB Output is correct
16 Correct 129 ms 7748 KB Output is correct
17 Correct 172 ms 7752 KB Output is correct
18 Correct 102 ms 6912 KB Output is correct
19 Correct 177 ms 8580 KB Output is correct
20 Correct 165 ms 8668 KB Output is correct
21 Correct 162 ms 8776 KB Output is correct
22 Correct 111 ms 7624 KB Output is correct
23 Correct 97 ms 7616 KB Output is correct
24 Correct 68 ms 6648 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 316 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 312 KB Output is correct
7 Correct 4 ms 576 KB Output is correct
8 Correct 5 ms 576 KB Output is correct
9 Correct 5 ms 580 KB Output is correct
10 Correct 5 ms 596 KB Output is correct
11 Correct 6 ms 544 KB Output is correct
12 Correct 4 ms 468 KB Output is correct
13 Correct 4 ms 580 KB Output is correct
14 Correct 4 ms 576 KB Output is correct
15 Correct 4 ms 596 KB Output is correct
16 Correct 4 ms 596 KB Output is correct
17 Correct 4 ms 596 KB Output is correct
18 Correct 3 ms 572 KB Output is correct
19 Correct 127 ms 8476 KB Output is correct
20 Correct 125 ms 8488 KB Output is correct
21 Correct 159 ms 8540 KB Output is correct
22 Correct 103 ms 7756 KB Output is correct
23 Correct 112 ms 7784 KB Output is correct
24 Correct 91 ms 7060 KB Output is correct
25 Correct 159 ms 8444 KB Output is correct
26 Correct 123 ms 8624 KB Output is correct
27 Correct 120 ms 8372 KB Output is correct
28 Correct 105 ms 7636 KB Output is correct
29 Correct 96 ms 7612 KB Output is correct
30 Correct 64 ms 6704 KB Output is correct
31 Correct 172 ms 8572 KB Output is correct
32 Correct 175 ms 8800 KB Output is correct
33 Correct 124 ms 8524 KB Output is correct
34 Correct 129 ms 7748 KB Output is correct
35 Correct 172 ms 7752 KB Output is correct
36 Correct 102 ms 6912 KB Output is correct
37 Correct 177 ms 8580 KB Output is correct
38 Correct 165 ms 8668 KB Output is correct
39 Correct 162 ms 8776 KB Output is correct
40 Correct 111 ms 7624 KB Output is correct
41 Correct 97 ms 7616 KB Output is correct
42 Correct 68 ms 6648 KB Output is correct
43 Correct 176 ms 10512 KB Output is correct
44 Correct 183 ms 10576 KB Output is correct
45 Correct 178 ms 10904 KB Output is correct
46 Correct 147 ms 8964 KB Output is correct
47 Correct 135 ms 8900 KB Output is correct
48 Correct 108 ms 6732 KB Output is correct
49 Correct 165 ms 10364 KB Output is correct
50 Correct 178 ms 10528 KB Output is correct
51 Correct 187 ms 10620 KB Output is correct
52 Correct 160 ms 8704 KB Output is correct
53 Correct 98 ms 8324 KB Output is correct