oj.uz

답안 #675862

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
675862 2022-12-28T08:36:52 Z Quan2003 Tree Rotations (POI11_rot) C++17
81 / 100
 152 ms 53756 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int sz =1e6+1;
const int ssz=5e3+1;
const int mod=1e9+7;
int p,n,q,timer,m,cnt;
long long lb,rb; 
queue<int>qe;
int ans[sz];
int lf[sz],rt[sz];
int lc[sz*40],rc[sz*40];
int cap[sz*40]; 
int val[sz];
int fa[sz];
void read(int &now){
     now = ++cnt;
     scanf("%d",&val[now]);
     if(!val[now]){
         read(lf[now]);
         read(rt[now]); 
     }
}
void upd(int pos,int &num,int l = 1, int r = n){
     if(!num) num = ++timer;
     cap[num] = 1;
     if(l == r) return; 
     int mid = (l + r)>>1;
     if(pos <= mid) upd(pos,lc[num],l,mid);
     else upd(pos,rc[num],mid + 1, r);
}
int merge(int roota, int rootb){
    if(!roota or !rootb) return roota + rootb;
    cap[roota]+=cap[rootb];
    lb += cap[rc[rootb]] * cap[lc[roota]];
    rb += cap[rc[roota]] * cap[lc[rootb]]; 
    lc[roota] = merge(lc[roota],lc[rootb]);
    rc[roota] = merge(rc[roota],rc[rootb]);
    rootb = 0; 
    return roota;
}
long long dfs(int u){
     long long res = 0;
     if(!val[u]){
          res = dfs(lf[u]) + dfs(rt[u]);
          lb = rb = 0;
          fa[u] = merge(fa[lf[u]],fa[rt[u]]);
          res = res + min(lb,rb);
     }
     else upd(val[u],fa[u]);
     return res; 
}
int main(){
      scanf("%d",&n);
      int root;
      read(root);
      long long res = dfs(root);  
      cout<<res<<endl;
}

Compilation message

rot.cpp: In function 'void read(int&)':
rot.cpp:18:11: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   18 |      scanf("%d",&val[now]);
      |      ~~~~~^~~~~~~~~~~~~~~~
rot.cpp: In function 'int main()':
rot.cpp:54:12: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   54 |       scanf("%d",&n);
      |       ~~~~~^~~~~~~~~

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct

Subtask #2
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct

Subtask #3
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct

Subtask #4
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 1108 KB Output is correct
2 Correct 3 ms 1108 KB Output is correct
3 Correct 2 ms 1236 KB Output is correct
4 Correct 2 ms 1236 KB Output is correct

Subtask #5
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 3028 KB Output is correct
2 Correct 7 ms 2900 KB Output is correct
3 Correct 18 ms 6920 KB Output is correct
4 Correct 7 ms 3284 KB Output is correct

Subtask #6
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 35 ms 11820 KB Output is correct
2 Correct 25 ms 12004 KB Output is correct
3 Correct 34 ms 13908 KB Output is correct
4 Correct 33 ms 14852 KB Output is correct

Subtask #7
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 60 ms 22732 KB Output is correct
2 Correct 60 ms 22024 KB Output is correct
3 Correct 64 ms 20716 KB Output is correct
4 Correct 51 ms 21168 KB Output is correct

Subtask #8
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 99 ms 29536 KB Output is correct
2 Correct 100 ms 30460 KB Output is correct
3 Correct 72 ms 32680 KB Output is correct
4 Correct 74 ms 32332 KB Output is correct

Subtask #9
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 117 ms 44788 KB Output is correct
2 Correct 121 ms 45848 KB Output is correct
3 Correct 142 ms 44984 KB Output is correct
4 Correct 115 ms 45364 KB Output is correct
5 Correct 131 ms 43876 KB Output is correct

Subtask #10
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 142 ms 49652 KB Output is correct
2 Incorrect 152 ms 53756 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #11
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 144 ms 52104 KB Output isn't correct
2 Halted 0 ms 0 KB -