oj.uz

Submission #675860

# Submission time Handle Problem Language Result Execution time Memory
675860 2022-12-28T08:23:36 Z Quan2003 Tree Rotations (POI11_rot) C++17
63 / 100
 1000 ms 65536 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int sz =2e5+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

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 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 304 KB Output is correct

Subtask #2
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 288 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 444 KB Output is correct
3 Correct 1 ms 440 KB Output is correct
4 Correct 1 ms 468 KB Output is correct

Subtask #4
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1108 KB Output is correct
2 Correct 3 ms 1108 KB Output is correct
3 Correct 2 ms 1216 KB Output is correct
4 Correct 3 ms 1236 KB Output is correct

Subtask #5
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 3028 KB Output is correct
2 Correct 7 ms 2880 KB Output is correct
3 Correct 18 ms 7124 KB Output is correct
4 Correct 7 ms 3412 KB Output is correct

Subtask #6
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 12248 KB Output is correct
2 Correct 26 ms 12244 KB Output is correct
3 Correct 40 ms 14284 KB Output is correct
4 Correct 33 ms 15156 KB Output is correct

Subtask #7
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 67 ms 23352 KB Output is correct
2 Correct 49 ms 22692 KB Output is correct
3 Correct 58 ms 21452 KB Output is correct
4 Correct 51 ms 21836 KB Output is correct

Subtask #8
0 / 9.0

# Verdict Execution time Memory Grader output
1 Incorrect 21 ms 3904 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 9.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1083 ms 48680 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #10
0 / 9.0

# Verdict Execution time Memory Grader output
1 Runtime error 68 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -

Subtask #11
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 95 ms 65536 KB Execution killed with signal 9
2 Halted 0 ms 0 KB -