oj.uz

답안 #34981

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
34981 2017-11-17T09:08:32 Z bql20000 스파이 (JOI13_spy) C++14
100 / 100
 83 ms 6516 KB 
#include <bits/stdc++.h>

#define ff(i,a,b)       for(int i=(a), _b=(b); i <= _b; ++i)
#define gg(i,a,b)       for(int i=(a), _b=(b); i >= _b; --i)
#define REP(i ,b)       for(int i=(0), _b=(b); i <  _b; ++i)
#define long            long long
#define ALL(v)          v.begin(), v.end()
#define endl            '\n'
#define Love(a)         {cerr << #a << " = " << a << endl;}
#define _               << " , " <<
#define X               first
#define Y               second
#define gc getchar
#define pc putchar

#define NAME            "spy"

using namespace std;
const int N = 2007;

int n, Q, rootA, rootB, cnt[N], pb[N], ans[N];
vector <int> a[N], b[N], c[N];

inline void read(int &x)
{
    register int c = gc();
    x = 0;
    int neg = 0;
    for (;((c<48 || c>57) && c != '-') ;c = gc());
    if(c=='-') {neg=1;c=gc();}
    for(;c>47 && c<58;c = gc()) {x = (x<<1) + (x<<3) + c - 48;}
    if(neg) x=-x;
}
inline void writeln(int x){

         char buffor[21];
         register int i=0;
         int neg=0; if (x<0) {neg=1; x= -x;}
         do{
               buffor[i++]=(x%10)+'0';
               x/=10;
            } while(x);
           i--;
           if (neg) pc('-');
           while(i>=0) pc(buffor[i--]);
           pc('\n');
       }

void Enter() {
    read(n);
    read(Q);
    ff(i, 1, n) {
        int p1, p2;
        read(p1);
        read(p2);
        if (p1 == 0) rootA = i;
        if (p2 == 0) rootB = i;
        a[p1].push_back(i);
        b[p2].push_back(i);
    }
    ff(i, 1, Q) {
        int r, b;
        read(r);
        read(b);
        c[r].push_back(b);
    }
}

void DFSB(int u) {
    for (int v : b[u]) {
        pb[v] = u;
        DFSB(v);
    }
}

void DFSA(int u) {
    for (int x : c[u]) cnt[x]++;
    for (int i = u; i; i = pb[i]) ans[u] += cnt[i];

    for (int v : a[u]) DFSA(v);

    for (int x : c[u]) cnt[x]--;
}

void Process() {
    DFSB(rootB);
    DFSA(rootA);
    ff(i, 1, n) writeln(ans[i]);
}

int main() {
    //ios_base::sync_with_stdio(0);  cin.tie(0);
    //freopen(NAME".inp", "r", stdin);
    //freopen(NAME".out", "w", stdout);
    Enter();
    Process();
    return 0;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 2180 KB Output is correct
2 Correct 0 ms 2180 KB Output is correct
3 Correct 0 ms 2180 KB Output is correct
4 Correct 0 ms 2180 KB Output is correct
5 Correct 0 ms 2180 KB Output is correct
6 Correct 0 ms 2180 KB Output is correct
7 Correct 0 ms 2180 KB Output is correct
8 Correct 0 ms 2180 KB Output is correct
9 Correct 0 ms 2180 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 2312 KB Output is correct
2 Correct 6 ms 2312 KB Output is correct
3 Correct 0 ms 2180 KB Output is correct
4 Correct 0 ms 2180 KB Output is correct
5 Correct 0 ms 2312 KB Output is correct
6 Correct 0 ms 2312 KB Output is correct
7 Correct 3 ms 2312 KB Output is correct
8 Correct 0 ms 2312 KB Output is correct

Subtask #3
70.0 / 70.0

# 결과 실행 시간 메모리 Grader output
1 Correct 73 ms 5348 KB Output is correct
2 Correct 59 ms 6516 KB Output is correct
3 Correct 73 ms 4936 KB Output is correct
4 Correct 59 ms 6196 KB Output is correct
5 Correct 63 ms 5348 KB Output is correct
6 Correct 66 ms 6444 KB Output is correct
7 Correct 63 ms 5480 KB Output is correct
8 Correct 83 ms 5480 KB Output is correct