Submission #1067280

#	Time	Username	Problem	Language	Result	Execution time	Memory
1067280		SoMotThanhXuan	Plahte (COCI17_plahte)	C++17	0 / 160	9 ms	32860 KiB

plahte

#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define MASK(i) (1LL << (i))
#define BIT(x, i) (((x) >> (i)) & 1)
#define FOR(i, a, b) for(int i = a; i <= b; ++i)
#define FORD(i, a, b) for(int i = b; i >= a; --i)
#define REP(i, a, b) for(int i = a; i < b; ++i)
#define REPD(i, a, b) for(int i = b; i > a; -- i)
#define ALL(v) v.begin(),v.end()
#define next __next
#define left __left
#define right __right
#define prev __prev
const int MOD[6] = {(int)1e9 + 7, (int)1e9 + 2277, (int)1e9 + 5277, (int)1e9 + 8277, (int)1e9 + 9277, 998244353};
const int BASE[6] = {23309, 300, 330, 280, 2309, 256};
const int base = BASE[0];
const int mod = MOD[0];
void add(int &u, int v){
    u += v;
    if(u >= mod) u -= mod;
}
void sub(int &u, int v){
    u -= v;
    if(u < 0) u += mod;
}
void minimize(int &u, int v){
    if(u > v) u = v;
}
void maximize(int &u, int v){
    if(u < v) u = v;
}
void minimizell(long long &u, long long v){
    if(u > v) u = v;
}
void maximizell(long long &u, long long v){
    if(u < v) u = v;
}
const int maxN = 80000 + 2;
const int maxM = 1e5 + 2;
const int maxK = 1e2 + 2;
const int INF = 1e9 + 8;
const long long INFLL = 1e18;
const int LOG = 16;
vector<int> adj[maxN];
int N, M;
struct Event{
    int x, yA, yB, type, id;
}seg[2 * maxN];
// 3 phai sau 1 va truoc 2
// 1 3 2
bool cmp(const Event &A, const Event &B){
    if(A.x != B.x) return A.x < B.x;
    if(A.type == 1 && B.type == 3) return true;
    if(A.type == 1 && B.type == 2) return true;
    if(A.type == 3 && B.type == 2) return true;
    return false;
}
int xA[maxN], xB[maxN], yA[maxN], yB[maxN];
int X[maxN], Y[maxN], K[maxN];
int d[3 * maxN];// compress array
int par[maxN];
int curNode = 0;
vector<int> st[12 * maxN];
set<int> col[maxN];
int it[12 * maxN];
int lazy[12 * maxN];
void build(int id, int l, int r){
    if(l == r){
        lazy[id] = -1;
        return ;
    }
    int mid = l + r >> 1;
    build(id << 1, l, mid);
    build(id << 1 | 1, mid + 1, r);
    lazy[id] = -1;
}
void push(int id){
    lazy[id << 1] = lazy[id << 1 | 1] = it[id << 1] = it[id << 1 | 1] = lazy[id];
    lazy[id] = -1;
}
void addRec(int id, int l, int r, int u, int v, int recId){
    if(l > v || r < u)return ;
    if(l >= u && r <= v){
        st[id].push_back(recId);
        it[id] = lazy[id] = recId;
        return ;
    }
    int mid = l + r >> 1;
    if(lazy[id] != -1)push(id);
    addRec(id << 1, l, mid, u, v, recId);
    addRec(id << 1 | 1, mid + 1, r, u, v, recId);
}
void revRec(int id, int l, int r, int u, int v){
    if(l > v || r < u) return ;
    if(l >= u && r <= v){
        st[id].pop_back();
        return ;
    }
    int mid = l + r >> 1;
    revRec(id << 1, l, mid, u, v);
    revRec(id << 1 | 1, mid + 1, r, u, v);
}
int get(int id, int l, int r, int u, int v){
    if(l > v || r < u) return 0;
    if(l >= u && r <= v){
        return it[id];
    }
    int mid = l + r >> 1;
    if(lazy[id] != -1)push(id);
    return max(get(id << 1, l, mid, u, v), get(id << 1 | 1, mid + 1, r, u, v));
}
int res[maxN];
void dfs(int u){
    for(int v : adj[u]){
        dfs(v);
        for(set<int> :: iterator it = col[v].begin(); it != col[v].end(); ++it)col[u].insert(*it);
        col[v].clear();
    }
    res[u] = col[u].size();
}
int degIn[maxN];
int main(){
    freopen("Plahte.INP", "r", stdin);
//    freopen("Plahte.OUT", "w", stdout);
    //freopen(".INP", "w", stdout);
    //freopen(".ANS", "w", stdout);
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);

    cin >> N >> M;
    int cnt = 0;
    FOR(i, 1, N){
        cin >> xA[i] >> yA[i] >> xB[i] >> yB[i];
        d[++cnt] = yA[i];
        d[++cnt] = yB[i];
    }

    FOR(i, 1, M){
        cin >> X[i] >> Y[i] >> K[i];
        d[++cnt] = Y[i];
    }
    sort(d + 1, d + 1 + cnt);

    int cntEvent = 0;
//    cnt = 20;
    FOR(i, 1, N){
        yA[i] = lower_bound(d + 1, d + 1 + cnt, yA[i]) - d;
        yB[i] = lower_bound(d + 1, d + 1 + cnt, yB[i]) - d;
        seg[++cntEvent] = {xA[i], yA[i], yB[i], 1, i};
        seg[++cntEvent] = {xB[i], yA[i], yB[i], 2, i};
    }
    FOR(i, 1, M){
        Y[i] = lower_bound(d + 1, d + 1 + cnt, Y[i]) - d;
        seg[++cntEvent] = {X[i], Y[i], Y[i], 3, K[i]};
    }
    sort(seg + 1, seg + 1 + cntEvent, cmp);
//    for(int i = 1; i <= cntEvent; ++i)cout << seg[i].x << ' ' << seg[i].yA << ' ' << seg[i].yB << ' ' << seg[i].type << ' ' << seg[i].id << "\n";
    FOR(i, 1, cntEvent){
        Event &tmp = seg[i];
        if(tmp.type == 1){
            int p = get(1, 1, cnt, tmp.yA, tmp.yB);
            if(p){
                adj[p].push_back(tmp.id);
                par[tmp.id] = p;
                degIn[tmp.id]++;
            }
            addRec(1, 1, cnt, tmp.yA, tmp.yB, tmp.id);
//            addSegment(1, 1, cnt, tmp.yA, tmp.yB, tmp.id);
        }
        else if(tmp.type == 2){

            revRec(1, 1, cnt, tmp.yA, tmp.yB);
            int pre = get(1, 1, cnt, yA[par[tmp.id]], yB[par[tmp.id]]);

            addRec(1, 1, cnt, tmp.yA, tmp.yB, pre);
//            cout << inRec(1, 1, cnt, tmp.yA, tmp.yB) << "\n";
//            FOR(i, tmp.yA, tmp.yB)cout << inRec(1, 1, cnt, i, i) << ' ';cout << "\n";
        }
        else{
            int node = get(1, 1, cnt, tmp.yA, tmp.yA);
            if(node){
                col[node].insert(tmp.id);
            }
        }
    }
    for(int i = 1; i <= N; ++i){
        if(degIn[i] == 0)dfs(i);
    }
    FOR(i, 1, N)cout << res[i] << '\n';
    return 0;
}

Compilation message (stderr)

plahte.cpp: In function 'void build(int, int, int)':
plahte.cpp:74:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   74 |     int mid = l + r >> 1;
      |               ~~^~~
plahte.cpp: In function 'void addRec(int, int, int, int, int, int)':
plahte.cpp:90:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   90 |     int mid = l + r >> 1;
      |               ~~^~~
plahte.cpp: In function 'void revRec(int, int, int, int, int)':
plahte.cpp:101:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  101 |     int mid = l + r >> 1;
      |               ~~^~~
plahte.cpp: In function 'int get(int, int, int, int, int)':
plahte.cpp:110:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  110 |     int mid = l + r >> 1;
      |               ~~^~~
plahte.cpp: In function 'int main()':
plahte.cpp:125:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  125 |     freopen("Plahte.INP", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 32
• Subtask 2: 0 / 32
• Subtask 3: 0 / 32
• Subtask 4: 0 / 32
• Subtask 5: 0 / 32