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Submission #72998

# Submission time Handle Problem Language Result Execution time Memory
72998 2018-08-27T12:58:01 Z Kmcode Roller Coaster Railroad (IOI16_railroad) C++14
0 / 100
 139 ms 15840 KB 
	#include<bits/stdc++.h>
	using namespace std;
	//#include "railroad.h"

	vector<pair<int,int> > v;
	 
	long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
	    int n = (int) s.size();
	    for(int i=0;i<n;i++){
			if(s[i]==t[i])continue;
			v.push_back(make_pair(s[i],1));
			v.push_back(make_pair(t[i],0));
		}
		sort(v.begin(),v.end());
		reverse(v.begin(),v.end());
		bool ok=false;
		int stk=0;
		int en=0;
		for(int i=0;i<v.size();i++){
			if(v[i].second==1){
				stk++;
			}
			else{
				if(stk){
					stk--;
					continue;
				}
				if(stk==0){
						if(en==0){
							en=1;
							break;
						}
						ok=true;
						break;
				}
			}
		}
	    return ok;
	}

Compilation message

railroad.cpp: In function 'long long int plan_roller_coaster(std::vector<int>, std::vector<int>)':
railroad.cpp:19:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0;i<v.size();i++){
               ~^~~~~~~~~

Subtask #1
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB n = 2
2 Correct 2 ms 356 KB n = 2
3 Correct 3 ms 432 KB n = 2
4 Correct 2 ms 472 KB n = 2
5 Correct 3 ms 552 KB n = 2
6 Incorrect 2 ms 552 KB answer is not correct: 0 instead of 523688153
7 Halted 0 ms 0 KB -

Subtask #2
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB n = 2
2 Correct 2 ms 356 KB n = 2
3 Correct 3 ms 432 KB n = 2
4 Correct 2 ms 472 KB n = 2
5 Correct 3 ms 552 KB n = 2
6 Incorrect 2 ms 552 KB answer is not correct: 0 instead of 523688153
7 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 139 ms 11776 KB n = 199999
2 Incorrect 135 ms 15840 KB answer is not correct: 0 instead of 1
3 Halted 0 ms 0 KB -

Subtask #4
0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 248 KB n = 2
2 Correct 2 ms 356 KB n = 2
3 Correct 3 ms 432 KB n = 2
4 Correct 2 ms 472 KB n = 2
5 Correct 3 ms 552 KB n = 2
6 Incorrect 2 ms 552 KB answer is not correct: 0 instead of 523688153
7 Halted 0 ms 0 KB -