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답안 #102351

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
102351 2019-03-24T13:13:38 Z LittleFlowers__ Examination (JOI19_examination) C++14
2 / 100
 1435 ms 1049600 KB 
#include <bits/stdc++.h>
using namespace std;
#define in ({int x=0;int c=getchar(),n=0;for(;!isdigit(c);c=getchar()) n=(c=='-');for(;isdigit(c);c=getchar()) x=x*10+c-'0';n?-x:x;})
inline void out(long long x){if(x<0) putchar('-'),x=-x;if(x>9) out(x/10);putchar(x%10+'0');}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int rnd(int l,int r){return l+rng()%(r-l+1);}
#define task "EXAMINATION"
#define forinc(a,b,c) for(int a=b,_c=c;a<=_c;++a)
#define fordec(a,b,c) for(int a=b,_c=c;a>=_c;--a)
#define forv(a,b) for(auto&a:b)
#define fi first
#define se second
#define pb push_back
#define ii pair<int,int>
#define all(a) a.begin(),a.end()
#define reset(f, x) memset(f, x, sizeof(f))
#define bit(x,i) ((x>>(i-1))&1)
#define on(x,i) (x|(1ll<<(i-1)))
#define off(x,i) (x&~(1<<(i-1)))

const int N=100010;
int n,q;
ii a[N];
struct id{
    int x,y,z,i;
}qry[N];

int ans[N];
vector<int> r;

int upp(int i,const vector<int>&v){
    return lower_bound(all(v),i)-v.begin()+1;
}

struct fenwick{
    vector<int> bit;
    void add(int i){
        if(!bit.size()) bit.resize(r.size()+3);
        for(;i;i-=i&-i) bit[i]++;
    }
    int que(int i){
        if(!bit.size()) bit.resize(r.size()+3);
        int ret=0;
        for(;i<=r.size();i+=i&-i) ret+=bit[i];
        return ret;
    }
}TT[N*3];

void add(int t){
    int x,y; x=upp(a[t].fi,r), y=upp(a[t].se,r);
    for(int i=x;i;i-=i&-i)
        TT[i].add(y);
}
int que(int x,int y){
    x=upp(x,r), y=upp(y,r);
    int ret=0;
    for(int i=x;i<=r.size();i+=i&-i)
        ret+=TT[i].que(y);
    return ret;
}

main()
{
    //freopen(task".inp","r",stdin);

    n=in,q=in;
    forinc(i,1,n) a[i]={in,in};
    sort(a+1,a+n+1,[](ii i,ii j){return i.fi+i.se>j.fi+j.se;});
    forinc(i,1,q) qry[i]={in,in,in,i};
    sort(qry+1,qry+q+1,[](id i,id j){return i.z>j.z;});

    forinc(i,1,n) r.pb(a[i].fi),r.pb(a[i].se),r.pb(a[i].fi+a[i].se);
    sort(all(r)); r.erase(unique(all(r)),r.end());

    int j=1;
    forinc(i,1,q){
        while(j<=n && a[j].fi+a[j].se>=qry[i].z){
            add(j++);
        }
        ans[qry[i].i]=que(qry[i].x,qry[i].y);
    }
    forinc(i,1,q){
        cout<<ans[i]<<"\n";
    }
}

Compilation message

examination.cpp: In member function 'int fenwick::que(int)':
examination.cpp:44:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(;i<=r.size();i+=i&-i) ret+=bit[i];
              ~^~~~~~~~~~
examination.cpp: In function 'int que(int, int)':
examination.cpp:57:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=x;i<=r.size();i+=i&-i)
                 ~^~~~~~~~~~
examination.cpp: At global scope:
examination.cpp:62:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^

Subtask #1
2.0 / 2.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 7424 KB Output is correct
2 Correct 10 ms 7424 KB Output is correct
3 Correct 8 ms 7424 KB Output is correct
4 Correct 11 ms 7432 KB Output is correct
5 Correct 10 ms 7424 KB Output is correct
6 Correct 9 ms 7424 KB Output is correct
7 Correct 223 ms 201040 KB Output is correct
8 Correct 217 ms 203412 KB Output is correct
9 Correct 232 ms 204100 KB Output is correct
10 Correct 106 ms 103700 KB Output is correct
11 Correct 13 ms 8064 KB Output is correct
12 Correct 12 ms 7680 KB Output is correct
13 Correct 191 ms 200644 KB Output is correct
14 Correct 180 ms 200824 KB Output is correct
15 Correct 193 ms 202384 KB Output is correct
16 Correct 15 ms 7680 KB Output is correct
17 Correct 46 ms 42872 KB Output is correct
18 Correct 10 ms 7552 KB Output is correct

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1435 ms 1049600 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #3
0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 1435 ms 1049600 KB Execution killed with signal 9 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 8 ms 7424 KB Output is correct
2 Correct 10 ms 7424 KB Output is correct
3 Correct 8 ms 7424 KB Output is correct
4 Correct 11 ms 7432 KB Output is correct
5 Correct 10 ms 7424 KB Output is correct
6 Correct 9 ms 7424 KB Output is correct
7 Correct 223 ms 201040 KB Output is correct
8 Correct 217 ms 203412 KB Output is correct
9 Correct 232 ms 204100 KB Output is correct
10 Correct 106 ms 103700 KB Output is correct
11 Correct 13 ms 8064 KB Output is correct
12 Correct 12 ms 7680 KB Output is correct
13 Correct 191 ms 200644 KB Output is correct
14 Correct 180 ms 200824 KB Output is correct
15 Correct 193 ms 202384 KB Output is correct
16 Correct 15 ms 7680 KB Output is correct
17 Correct 46 ms 42872 KB Output is correct
18 Correct 10 ms 7552 KB Output is correct
19 Runtime error 1435 ms 1049600 KB Execution killed with signal 9 (could be triggered by violating memory limits)
20 Halted 0 ms 0 KB -