oj.uz

Submission #95952

# Submission time Handle Problem Language Result Execution time Memory
95952 2019-02-04T17:24:53 Z igzi parentrises (BOI18_parentrises) C++17
50 / 100
 112 ms 8200 KB 
#include <bits/stdc++.h>
#define maxN 1000005

using namespace std;

int p,t,i,m,l,d;

string s,ans;

vector <int> v,u;

bool moze(int m){
int x;
x=m+v.size()-u.size();
if(x<=0) return true;
if(x>u.size() || v[m-1]>u[u.size()-x]) return false;
return true;
}

bool proveri(){
int r,b,i;
r=b=0;
for(i=0;i<s.size();i++){
if(s[i]=='('){
if(ans[i]=='G') {r++; b++;}
if(ans[i]=='R') r++;
if(ans[i]=='B') b++;
}
else{
if(ans[i]=='G') {r--; b--;}
if(ans[i]=='R') r--;
if(ans[i]=='B') b--;
if(r<0 || b<0) return false;
}
}
return (r==0 && b==0);
}

int main(){
std::ios_base::sync_with_stdio(false);
cin>>t;
cin>>t;
while(t--){
cin>>s;
for(i=0;i<s.size();i++){
if(s[i]=='(') v.push_back(i);
else u.push_back(i);
}
l=0;
d=v.size();
while(d>l){
m=(l+d)/2+1;
if(moze(m)) l=m;
else d=m-1;
}
ans=s;
d=l+v.size()-u.size();
for(i=0;i<v.size();i++){
if(i<l)  ans[v[i]]='G';
else{
if((i-l)%2) ans[v[i]]='R';
else ans[v[i]]='B';
}
}
for(i=0;i<u.size();i++){
if(i>=u.size()-d) ans[u[i]]='G';
else{
if(i%2) ans[u[i]]='R';
else ans[u[i]]='B';  
}
}
if(proveri()) cout<<ans<<endl;
else cout<<"impossible"<<endl;
v.clear();
u.clear();
}
return 0;
}

Compilation message

parentrises.cpp: In function 'bool moze(int)':
parentrises.cpp:16:5: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 if(x>u.size() || v[m-1]>u[u.size()-x]) return false;
    ~^~~~~~~~~
parentrises.cpp: In function 'bool proveri()':
parentrises.cpp:23:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 for(i=0;i<s.size();i++){
         ~^~~~~~~~~
parentrises.cpp: In function 'int main()':
parentrises.cpp:45:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 for(i=0;i<s.size();i++){
         ~^~~~~~~~~
parentrises.cpp:58:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 for(i=0;i<v.size();i++){
         ~^~~~~~~~~
parentrises.cpp:65:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 for(i=0;i<u.size();i++){
         ~^~~~~~~~~
parentrises.cpp:66:5: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 if(i>=u.size()-d) ans[u[i]]='G';
    ~^~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 2 ms 504 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 504 KB Output is correct
16 Correct 15 ms 504 KB Output is correct
17 Correct 5 ms 1276 KB Output is correct
18 Correct 3 ms 632 KB Output is correct
19 Correct 4 ms 1016 KB Output is correct
20 Correct 4 ms 1332 KB Output is correct
21 Correct 112 ms 2044 KB Output is correct
22 Correct 27 ms 8192 KB Output is correct
23 Correct 15 ms 2908 KB Output is correct
24 Correct 22 ms 5012 KB Output is correct
25 Correct 25 ms 8200 KB Output is correct

Subtask #5
0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 384 KB Expected integer, but "impossible" found

Subtask #6
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 384 KB Expected integer, but "impossible" found

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 384 KB Expected integer, but "impossible" found