oj.uz

Submission #121325

# Submission time Handle Problem Language Result Execution time Memory
121325 2019-06-26T10:25:56 Z BThero Fibonacci representations (CEOI18_fib) C++17
50 / 100
 43 ms 496 KB 
// Why am I so dumb? :c
// chrono::system_clock::now().time_since_epoch().count()

//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
#include<ext/pb_ds/tree_policy.hpp>

#define pb push_back
#define mp make_pair

#define all(x) (x).begin(), (x).end()

#define fi first
#define se second

using namespace std;
using namespace __gnu_pbds;

typedef long long ll;   
template<typename T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

const int MOD = (int)1e9 + 7;

map<int, int> cnt;

int dp[2][205];

int n;

int addMod(int a, int b, int m = MOD) {
    a += b;

    if (m <= a) {
        a -= m;
    }

    return a;
}

int mulMod(int a, int b, int m = MOD) {
    return a * 1ll * b % m;
}

int binPow(int a, int b) {
    int ret = 1;

    while (b > 0) {
        if (b & 1) {
            ret = mulMod(ret, a);
        }

        a = mulMod(a, a);
        b >>= 1;
    }

    return ret;
}

int getVal(int x) {
    auto it = cnt.find(x);

    if (it == cnt.end()) {
        return 0;
    }

    return it -> se;
}

void rec() {
    int pos = -1;

    for (auto it : cnt) {
        if (it.se == 2) {
            pos = it.fi;
        }
    }    

    if (pos == -1) {
        return;            
    }

    if (pos == 1) {
        if (getVal(2) == 0) {
            cnt[2] = 1;
            cnt[1] = 0;
        }
        else {
            --cnt[1];
            --cnt[2];
            ++cnt[3];
            rec();
        }
    }
    else if (pos == 2) {
        --cnt[2];
        cnt[1] += 2;
        --cnt[1];
        --cnt[2];
        ++cnt[3];
        rec();        
    }
    else {
        --cnt[pos];
        ++cnt[pos - 1];
        ++cnt[pos - 2];
        --cnt[pos - 1];
        --cnt[pos];
        ++cnt[pos + 1];
        rec();
    }
}

void norm() {
    vector<int> tmp;    

    for (int step = 1; step <= 100; ++step) {
        for (auto it2 = cnt.rbegin(); it2 != cnt.rend(); ++it2) {
            auto it = *it2;

            if (it.se == 1 && getVal(it.fi + 1) == 1) {
                cnt[it.fi] = 0;
                cnt[it.fi + 1] = 0;
                cnt[it.fi + 2] = 1;

            }        
        }        
    }    
}

void solve() {
    scanf("%d", &n);
    
    for (int i = 1; i <= n; ++i) {
        int x;
        scanf("%d", &x);

        ++cnt[x];
        rec();
        norm();          

        dp[0][0] = 1;
        int prev = 0, ptr = 0;
                              
        for (auto it : cnt) {
            if (it.se == 0) {
                continue;
            }

            int cur = it.fi;

            ++ptr;
            dp[0][ptr] = addMod(dp[0][ptr - 1], dp[1][ptr - 1]);
            dp[1][ptr] = mulMod(dp[0][ptr - 1], (cur - prev - 1) / 2);
            dp[1][ptr] = addMod(dp[1][ptr], mulMod(dp[1][ptr - 1], (cur - prev) / 2));
            prev = cur;                    
        }                                                                                  

        printf("%d\n", addMod(dp[0][ptr], dp[1][ptr]));
    }
}

int main() {
    //freopen("fast.txt", "w", stdout);
    int tt = 1;

    while (tt--) {
        solve();
    }

    return 0;
}

Compilation message

fib.cpp: In function 'void solve()':
fib.cpp:134:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &n);
     ~~~~~^~~~~~~~~~
fib.cpp:138:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &x);
         ~~~~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 9 ms 256 KB Output is correct
9 Correct 4 ms 256 KB Output is correct
10 Correct 10 ms 384 KB Output is correct
11 Correct 7 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 256 KB Output is correct
2 Correct 11 ms 384 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 9 ms 256 KB Output is correct
9 Correct 4 ms 256 KB Output is correct
10 Correct 10 ms 384 KB Output is correct
11 Correct 7 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 3 ms 256 KB Output is correct
14 Correct 11 ms 384 KB Output is correct
15 Correct 3 ms 384 KB Output is correct
16 Correct 4 ms 384 KB Output is correct
17 Correct 10 ms 256 KB Output is correct
18 Correct 10 ms 256 KB Output is correct
19 Correct 4 ms 384 KB Output is correct
20 Correct 10 ms 384 KB Output is correct
21 Correct 10 ms 256 KB Output is correct
22 Correct 10 ms 256 KB Output is correct
23 Correct 11 ms 384 KB Output is correct

Subtask #5
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 256 KB Output is correct
2 Runtime error 43 ms 496 KB Execution killed with signal 11 (could be triggered by violating memory limits)
3 Halted 0 ms 0 KB -

Subtask #6
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 384 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 9 ms 256 KB Output is correct
9 Correct 4 ms 256 KB Output is correct
10 Correct 10 ms 384 KB Output is correct
11 Correct 7 ms 384 KB Output is correct
12 Correct 4 ms 384 KB Output is correct
13 Correct 3 ms 256 KB Output is correct
14 Correct 11 ms 384 KB Output is correct
15 Correct 3 ms 384 KB Output is correct
16 Correct 4 ms 384 KB Output is correct
17 Correct 10 ms 256 KB Output is correct
18 Correct 10 ms 256 KB Output is correct
19 Correct 4 ms 384 KB Output is correct
20 Correct 10 ms 384 KB Output is correct
21 Correct 10 ms 256 KB Output is correct
22 Correct 10 ms 256 KB Output is correct
23 Correct 11 ms 384 KB Output is correct
24 Correct 15 ms 256 KB Output is correct
25 Runtime error 43 ms 496 KB Execution killed with signal 11 (could be triggered by violating memory limits)
26 Halted 0 ms 0 KB -