Submission #384257

#	Time	Username	Problem	Language	Result	Execution time	Memory
384257		i_am_noob	Examination (JOI19_examination)	C++17	100 / 100	895 ms	18656 KiB

examination

#pragma GCC target("sse,sse2,sse3,ssse3,sse4,avx,avx2,fma")
#include<bits/stdc++.h>
#pragma GCC optimize("Ofast,unroll-loops")
using namespace std;

#define ll long long
//#define int ll
#define ull unsigned long long
#define ld long double
#define rep(a) rep1(i,a)
#define rep1(i,a) rep2(i,0,a)
#define rep2(i,b,a) for(int i=(b); i<((int)(a)); i++)
#define rep3(i,b,a) for(int i=(b); i>=((int)(a)); i--)
#define all(a) a.begin(),a.end()
#define pii pair<int,int>
#define pb push_back
//#define inf 1010000000
#define inf 4000000000000000000
#define eps 1e-9
#define sz(a) ((int)a.size())
#define pow2(x) (1ll<<(x))
#define ceiling(a,b) (((a)+(b)-1)/(b))
#ifdef i_am_noob
#define bug(...) cerr << "#" << __LINE__ << ' ' << #__VA_ARGS__ << "- ", _do(__VA_ARGS__)
template<typename T> void _do(T && x) {cerr << x << endl;}
template<typename T, typename ...S> void _do(T && x, S&&...y) {cerr << x << ", "; _do(y...);}
#else
#define bug(...) 826
#endif

inline char readchar(){
    const int maxn=1000000;
    static char buf[maxn],*p=buf,*q=buf;
    if(p==q&&(q=(p=buf)+fread(buf,1,maxn,stdin))==buf) return EOF;
    else return *p++;
}
inline int readint(){
    int c=readchar(),x=0,neg=0;
    while((c<'0'||c>'9')&&c!='-'&&c!=EOF) c=readchar();
    if(c=='-') neg=1,c=readchar();
    while(c>='0'&&c<='9') x=(x<<3)+(x<<1)+(c^'0'),c=readchar();
    return neg?-x:x;
}

const int Mod=1000000007,Mod2=998244353;
const int MOD=Mod;
const int maxn=200005;
//i_am_noob
struct item{
    int x,y,z,id;
};
int n,m,ans[maxn];
item a[maxn];

struct BIT{
    int n;
    vector<int> val;
    BIT(int _n){val.resize(_n+5),n=_n;}
    void modify(int p, int x){for(++p; p<n+5; p+=p&-p) val[p]+=x;}
    int query(int l, int r){
        int res=0;
        for(++r; r; r-=r&-r) res+=val[r];
        for(; l; l-=l&-l) res-=val[l];
        return res;
    }
};

void solve(int l, int r){
    if(l==r) return;
    bug(l,r);
    vector<item> vec1,vec2;
    int mid=l+r>>1;
    rep2(i,l,mid+1) vec1.pb(a[i]);
    rep2(i,mid+1,r+1) vec2.pb(a[i]);
    vector<int> vec;
    for(auto& i: vec1) vec.pb(i.z);
    for(auto& i: vec2) vec.pb(i.z);
    sort(all(vec));
    vec.resize(unique(all(vec))-vec.begin());
    for(auto& i: vec1) i.z=lower_bound(all(vec),i.z)-vec.begin();
    for(auto& i: vec2) i.z=lower_bound(all(vec),i.z)-vec.begin();
    
    sort(all(vec1),[](item& i, item& j){return i.y>j.y;});
    sort(all(vec2),[](item& i, item& j){return i.y>j.y;});
    for(auto& i: vec1) bug(i.x,i.y,i.z,i.id);
    for(auto& i: vec2) bug(i.x,i.y,i.z,i.id);
    BIT bit(r-l+1);
    int curl=0,curr=0;
    while(curl<sz(vec1)){
        if(curr==sz(vec2)||vec1[curl].y>vec2[curr].y){
            if(vec1[curl].id!=-1){
                bug(bit.query(vec1[curl].z,r-l));
                ans[vec1[curl].id]+=bit.query(vec1[curl].z,r-l);
            }
            curl++;
        }
        else{
            if(vec2[curr].id==-1){
                bug(curl,curr);
                bit.modify(vec2[curr].z,1);
            }
            curr++;
        }
    }
    solve(l,mid),solve(mid+1,r);
}

signed main(){
    ios_base::sync_with_stdio(0),cin.tie(0);
    #ifdef i_am_noob
    freopen("input1.txt","r",stdin);
    freopen("output1.txt","w",stdout);
    freopen("output2.txt","w",stderr);
    #endif
    cin >> n >> m;
    rep(n) cin >> a[i].x >> a[i].y;
    rep(n) a[i].z=a[i].x+a[i].y,a[i].id=-1;
    rep(m) cin >> a[n+i].x >> a[n+i].y >> a[n+i].z;
    rep(m) a[n+i].id=i;

    sort(a,a+n+m,[](item& i, item& j){return i.x!=j.x?i.x<j.x:i.id>j.id;});
    solve(0,n+m-1);
    rep(m) cout << ans[i] << "\n";
    return 0;
}

Compilation message (stderr)

examination.cpp: In function 'void solve(int, int)':
examination.cpp:28:18: warning: statement has no effect [-Wunused-value]
   28 | #define bug(...) 826
      |                  ^~~
examination.cpp:70:5: note: in expansion of macro 'bug'
   70 |     bug(l,r);
      |     ^~~
examination.cpp:72:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   72 |     int mid=l+r>>1;
      |             ~^~
examination.cpp:28:18: warning: statement has no effect [-Wunused-value]
   28 | #define bug(...) 826
      |                  ^~~
examination.cpp:85:24: note: in expansion of macro 'bug'
   85 |     for(auto& i: vec1) bug(i.x,i.y,i.z,i.id);
      |                        ^~~
examination.cpp:85:15: warning: unused variable 'i' [-Wunused-variable]
   85 |     for(auto& i: vec1) bug(i.x,i.y,i.z,i.id);
      |               ^
examination.cpp:28:18: warning: statement has no effect [-Wunused-value]
   28 | #define bug(...) 826
      |                  ^~~
examination.cpp:86:24: note: in expansion of macro 'bug'
   86 |     for(auto& i: vec2) bug(i.x,i.y,i.z,i.id);
      |                        ^~~
examination.cpp:86:15: warning: unused variable 'i' [-Wunused-variable]
   86 |     for(auto& i: vec2) bug(i.x,i.y,i.z,i.id);
      |               ^
examination.cpp:28:18: warning: statement has no effect [-Wunused-value]
   28 | #define bug(...) 826
      |                  ^~~
examination.cpp:92:17: note: in expansion of macro 'bug'
   92 |                 bug(bit.query(vec1[curl].z,r-l));
      |                 ^~~
examination.cpp:28:18: warning: statement has no effect [-Wunused-value]
   28 | #define bug(...) 826
      |                  ^~~
examination.cpp:99:17: note: in expansion of macro 'bug'
   99 |                 bug(curl,curr);
      |                 ^~~

• Subtask 1: 2 / 2
• Subtask 2: 20 / 20
• Subtask 3: 21 / 21
• Subtask 4: 57 / 57