Submission #30115

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
30115	2017-07-22T06:38:48 Z	서규호(#1248)	Tree Rotations (POI11_rot)	C++14	0 / 100	0 ms	1848 KB

#include <bits/stdc++.h>
#include <unistd.h>

#define pii pair<int,int>
#define pll pair<lld,lld>
#define pb push_back
#define next nextt
#define left leftt
#define right rightt
#define lld long long
#define Inf 1000000000
#define mod 1000000007
#define Linf 1000000000000000000LL
#define get gett

using namespace std;

const int MX = 2000000;
int N,rear; lld ans;
int left[MX],right[MX];
set<int> S[MX];

void dfs(int x){
	int in;
	scanf("%d",&in);
	if(in == 0){
		rear++;
		left[x] = rear;
		dfs(rear);
	}else{
		left[x] = in;
	}
	scanf("%d",&in);
	if(in == 0){
		rear++;
		right[x] = rear;
		dfs(rear);
	}else{
		right[x] = in;
	}
}

void calc(int x){
	set<int> tmp;
	if(left[x] <= N){
        S[x-N].insert(left[x]);
	}else{
	    calc(left[x]);
	    swap(S[x-N],S[left[x]-N]);
	}
	if(right[x] <= N){
        tmp.insert(right[x]);
	}else{
        calc(right[x]);
        swap(tmp,S[right[x]-N]);
	}
	if(S[x-N].size() < tmp.size()) swap(S[x-N],tmp);
	int cnt = 0; lld sum = 0;
	auto it = S[x-N].begin();
	for(auto &i : tmp){
		while(1){
			if(it != S[x-N].end() && (*it) < i){
				cnt++;
				it++;
			}else break;
		}
		sum += cnt;
	}
	lld calctmp = (lld)S[x-N].size()*(lld)tmp.size();
	ans += min(sum,calctmp-sum);
	for(auto &i : tmp) S[x-N].insert(i);
}

int main(){
    //freopen("input.txt","r",stdin);
	int in;
	scanf("%d",&N);
	scanf("%d",&in);
	if(N == 1){
		puts("0");
		return 0;
	}
	rear = N+1;
	dfs(N+1);
	calc(N+1);
	printf("%lld\n",ans);

	return 0;
}

Compilation message

rot.cpp: In function 'void dfs(int)':
rot.cpp:25:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&in);
                 ^
rot.cpp:33:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&in);
                 ^
rot.cpp: In function 'int main()':
rot.cpp:77:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&N);
                ^
rot.cpp:78:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&in);
                 ^

Subtask #1
0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	0 ms	1848 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #2
0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	0 ms	1848 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #3
0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	0 ms	1848 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #4
0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	0 ms	1848 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #5
0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	0 ms	1848 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #6
0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	0 ms	1848 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #7
0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	0 ms	1848 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #8
0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	0 ms	1848 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #9
0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	0 ms	1848 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #10
0 / 9.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	0 ms	1848 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-

Subtask #11
0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Runtime error	0 ms	1848 KB	Execution killed with signal 11 (could be triggered by violating memory limits)
2	Halted	0 ms	0 KB	-