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Submission #49342

# Submission time Handle Problem Language Result Execution time Memory
49342 2018-05-26T09:21:15 Z 3zp Kangaroo (CEOI16_kangaroo) C++14
51 / 100
 1832 ms 425624 KB 
#include<bits/stdc++.h>
using namespace std;
int dp[209][209][209][3];
int prefdp[209][209][209][3];
int mod = 1e9+ 7;
main(){
    int n,l,r;
    cin >> n >> l >> r;
    dp[1][1][1][1] = 1;
    dp[1][1][1][0] = 1;
    prefdp[1][1][1][1] = 1;
    prefdp[1][1][1][0] = 1;
    for(int N = 2; N <= n; N++){
        for(int L = 1; L <= n; L++){
            for(int R = max(0,r - (n - N)); R <= r; R++){
                for(int D = 0; D < 2; D++){
                    if(L != R){
                        int nR = R;
                        if (R > L) nR--;
                        if(D == 0){
                            dp[N][L][R][D] += prefdp[N-1][N-1][nR][1-D] - prefdp[N-1][L-1][nR][1-D] + mod;
                            while (dp[N][L][R][D] > mod)  dp[N][L][R][D]-=mod;
                        }
                        else {
                            dp[N][L][R][D] += prefdp[N-1][L-1][nR][1-D];
                            while (dp[N][L][R][D] > mod)  dp[N][L][R][D]-=mod;
                        }
                    }
                    prefdp[N][L][R][D] = prefdp[N][L-1][R][D] + dp[N][L][R][D];
                    if( prefdp[N][L][R][D] > mod)  prefdp[N][L][R][D] -=  mod;
                }
            }
        }
    }
    cout << (dp[n][l][r][0] + dp[n][l][r][1]) % mod << endl;
}

Compilation message

kangaroo.cpp:6:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main(){
      ^

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 612 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 612 KB Output is correct
3 Correct 5 ms 3720 KB Output is correct
4 Correct 10 ms 8376 KB Output is correct
5 Correct 9 ms 8376 KB Output is correct
6 Correct 10 ms 8376 KB Output is correct
7 Correct 9 ms 8376 KB Output is correct
8 Correct 10 ms 8376 KB Output is correct
9 Correct 30 ms 8376 KB Output is correct
10 Correct 10 ms 8376 KB Output is correct
11 Correct 9 ms 8376 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 612 KB Output is correct
3 Correct 5 ms 3720 KB Output is correct
4 Correct 10 ms 8376 KB Output is correct
5 Correct 9 ms 8376 KB Output is correct
6 Correct 10 ms 8376 KB Output is correct
7 Correct 9 ms 8376 KB Output is correct
8 Correct 10 ms 8376 KB Output is correct
9 Correct 30 ms 8376 KB Output is correct
10 Correct 10 ms 8376 KB Output is correct
11 Correct 9 ms 8376 KB Output is correct
12 Correct 246 ms 194744 KB Output is correct
13 Correct 192 ms 194744 KB Output is correct
14 Correct 221 ms 195040 KB Output is correct
15 Correct 256 ms 196992 KB Output is correct
16 Correct 193 ms 196992 KB Output is correct
17 Correct 245 ms 196992 KB Output is correct
18 Correct 183 ms 196992 KB Output is correct
19 Correct 254 ms 196992 KB Output is correct
20 Correct 261 ms 197000 KB Output is correct

Subtask #4
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 612 KB Output is correct
3 Correct 5 ms 3720 KB Output is correct
4 Correct 10 ms 8376 KB Output is correct
5 Correct 9 ms 8376 KB Output is correct
6 Correct 10 ms 8376 KB Output is correct
7 Correct 9 ms 8376 KB Output is correct
8 Correct 10 ms 8376 KB Output is correct
9 Correct 30 ms 8376 KB Output is correct
10 Correct 10 ms 8376 KB Output is correct
11 Correct 9 ms 8376 KB Output is correct
12 Correct 246 ms 194744 KB Output is correct
13 Correct 192 ms 194744 KB Output is correct
14 Correct 221 ms 195040 KB Output is correct
15 Correct 256 ms 196992 KB Output is correct
16 Correct 193 ms 196992 KB Output is correct
17 Correct 245 ms 196992 KB Output is correct
18 Correct 183 ms 196992 KB Output is correct
19 Correct 254 ms 196992 KB Output is correct
20 Correct 261 ms 197000 KB Output is correct
21 Runtime error 1832 ms 425624 KB Execution killed with signal 11 (could be triggered by violating memory limits)
22 Halted 0 ms 0 KB -