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HIIT Open 2018

Start:2018-05-26 11:00:00
End:2018-05-26 16:00:00
 

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CSES - HIIT Open 2018 - Results
History
2018-05-26 11:14:03
Task:Inversions
Sender:Ukkonen Fan Club
Submission time:2018-05-26 11:14:03
Language:C++
Status:READY
Result:ACCEPTED

Test results

testverdicttime (s)
#1ACCEPTED0.02 / 1.00details
#2ACCEPTED0.02 / 1.00details
#3ACCEPTED0.03 / 1.00details
#4ACCEPTED0.02 / 1.00details
#5ACCEPTED0.02 / 1.00details

Compiler report

input/code.cpp: In function 'int main()':
input/code.cpp:8:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0;i<s.size();++i){
                  ~^~~~~~~~~

Code

#include <iostream>
using namespace std;
string s;
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    cin >> s;
    int a=0;int b=0;
    for (int i=0;i<s.size();++i){
        a+=(s[i]=='1')==(i&1);
        b+=(s[i]=='1')!=(i&1);
    }
    cout << min(a, b) << "\n";
}

Test details

Test 1

Verdict: ACCEPTED

input
000000000000000000000000000000...
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correct output
500000
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user output
500000
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Test 2

Verdict: ACCEPTED

input
111111111111111111111111111111...
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correct output
500000
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user output
500000
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Test 3

Verdict: ACCEPTED

input
010101010101010101010101010101...
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correct output
0
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user output
0
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Test 4

Verdict: ACCEPTED

input
101010101010101010101010101010...
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correct output
0
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user output
0
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Test 5

Verdict: ACCEPTED

input
110101011010110100100111110110...
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correct output
499476
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user output
499476
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