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Submission #69995

# Submission time Handle Problem Language Result Execution time Memory
69995 2018-08-22T08:09:47 Z 3zp parentrises (BOI18_parentrises) C++14
50 / 100
 771 ms 263168 KB 
#include<bits/stdc++.h>
using namespace std;
int f[2000009];
int dp[309][609][609];
int ans[309];
int mod = 1e9+7;
main(){
    int P;
    cin >> P;
    if(P == 1){
        int t;
        cin >> t;

        while(t--){
            string s, ans = "";
            cin >> s;
            int a = 0, b = 0, fl = 0;
            for(int i = 0; i < s.size(); i++){
                if(s[i] == '(') a++;
                else b++;
            }
            if(a > 2 * b || b > 2 * a){
                cout << "impossible"<<endl;
                continue;
            }
            if(a > b){
                fl = 1;
                swap(a, b);
                reverse(s.begin(), s.end());
                for(int i = 0; i < s.size(); i++)
                    if(s[i] == '(') s[i] = ')';
                else s[i] = '(';
            }
            int k =  b - a;
            vector<int> X, Y;
            for(int i = 0; i < s.size(); i++){
                f[i] = 0;
                if(s[i] == '(') X.push_back(i);

            else Y.push_back(i);
            }
            for(int i = 0; i < k; i++)
                f[X[i]] = 1;
            int x = k, y = Y.size()-1;
            int A = 0, B = 0;
            while(x < X.size() && y >= 0 && X[x] < Y[y])
                f[X[x]] = 1, f[Y[y]] = 1, x++, y--;
            for(int i = 0; i < s.size(); i++){
                if(s[i] == '('){

                    if(f[i]) A++,B++,ans+='G';
                    else if(A < B) A++,ans+='R';
                    else B++, ans += 'B';
                }
                else{
                    if(f[i]) A--,B--, ans+='G';
                    else {if(A > B) A--, ans+='R';
                    else B--,ans+='B';
                    }
                }
                if(A < 0 ||  B < 0) fl = 2;
            }
            if(fl == 2) cout <<"impossible"<<endl;
            else {if (fl) reverse(ans.begin(), ans.end());
            cout<<ans<<endl;}
        }
    }
    else{

        dp[0][0][0] = 1;
        for(int i = 0; i <= 300; i++){
            for(int l = 0; l <= 600; l++)
                for(int r = l; r <= 600; r++){
                    dp[i + 1][max(0, l-2)][r - 1] += dp[i][l][r];
                    dp[i + 1][l + 1][r + 2] += dp[i][l][r];
                    if(dp[i + 1][max(0, l - 2)][r - 1] >= mod)
                        dp[i + 1][max(0, l - 2)][r - 1] -= mod;
                    if(dp[i + 1][l + 1][r + 2] >= mod)
                        dp[i + 1][l + 1][r + 2] -= mod;
                }
            for(int j = 0;  j <= 600; j++)
                ans[i] = (ans[i] + dp[i][0][j])% mod;
        }
        int t;
        cin >> t;
        while(t--){
            int N;
            cin >> N;
            cout << ans[N]<<endl;
        }
    }
}

Compilation message

parentrises.cpp:7:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^
parentrises.cpp: In function 'int main()':
parentrises.cpp:18:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int i = 0; i < s.size(); i++){
                            ~~^~~~~~~~~~
parentrises.cpp:30:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
                 for(int i = 0; i < s.size(); i++)
                                ~~^~~~~~~~~~
parentrises.cpp:36:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int i = 0; i < s.size(); i++){
                            ~~^~~~~~~~~~
parentrises.cpp:46:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             while(x < X.size() && y >= 0 && X[x] < Y[y])
                   ~~^~~~~~~~~~
parentrises.cpp:48:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int i = 0; i < s.size(); i++){
                            ~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 340 KB Output is correct
2 Correct 2 ms 488 KB Output is correct
3 Correct 2 ms 524 KB Output is correct
4 Correct 2 ms 524 KB Output is correct
5 Correct 3 ms 648 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 648 KB Output is correct
2 Correct 2 ms 648 KB Output is correct
3 Correct 2 ms 648 KB Output is correct
4 Correct 2 ms 648 KB Output is correct
5 Correct 2 ms 648 KB Output is correct

Subtask #3
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 648 KB Output is correct
2 Correct 2 ms 648 KB Output is correct
3 Correct 2 ms 648 KB Output is correct
4 Correct 2 ms 648 KB Output is correct
5 Correct 2 ms 648 KB Output is correct
6 Correct 2 ms 648 KB Output is correct
7 Correct 2 ms 648 KB Output is correct
8 Correct 3 ms 648 KB Output is correct
9 Correct 3 ms 648 KB Output is correct
10 Correct 2 ms 648 KB Output is correct

Subtask #4
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 648 KB Output is correct
2 Correct 2 ms 648 KB Output is correct
3 Correct 2 ms 648 KB Output is correct
4 Correct 2 ms 648 KB Output is correct
5 Correct 2 ms 648 KB Output is correct
6 Correct 2 ms 648 KB Output is correct
7 Correct 2 ms 648 KB Output is correct
8 Correct 3 ms 648 KB Output is correct
9 Correct 3 ms 648 KB Output is correct
10 Correct 2 ms 648 KB Output is correct
11 Correct 5 ms 648 KB Output is correct
12 Correct 4 ms 788 KB Output is correct
13 Correct 4 ms 788 KB Output is correct
14 Correct 4 ms 788 KB Output is correct
15 Correct 4 ms 856 KB Output is correct
16 Correct 29 ms 868 KB Output is correct
17 Correct 12 ms 2136 KB Output is correct
18 Correct 9 ms 2136 KB Output is correct
19 Correct 11 ms 2136 KB Output is correct
20 Correct 9 ms 2468 KB Output is correct
21 Correct 223 ms 3072 KB Output is correct
22 Correct 95 ms 16012 KB Output is correct
23 Correct 75 ms 16012 KB Output is correct
24 Correct 75 ms 16012 KB Output is correct
25 Correct 77 ms 18940 KB Output is correct

Subtask #5
0 / 6.0

# Verdict Execution time Memory Grader output
1 Runtime error 771 ms 263168 KB Execution killed with signal 9 (could be triggered by violating memory limits)

Subtask #6
0 / 16.0

# Verdict Execution time Memory Grader output
1 Runtime error 771 ms 263168 KB Execution killed with signal 9 (could be triggered by violating memory limits)

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Runtime error 771 ms 263168 KB Execution killed with signal 9 (could be triggered by violating memory limits)