Submission #481047

# Submission time Handle Problem Language Result Execution time Memory
481047 2021-10-19T10:52:56 Z FatihSolak Energetic turtle (IZhO11_turtle) C++17
40 / 100
2000 ms 3148 KB
#include <bits/stdc++.h>
using namespace std;
int n,m,k,t,mod;
int dp[25][25];
int vis[600005];
vector<int> p;
int binpow(int a,int b){
    int ret = 1;
    while(b){
        if(b&1){
            ret = 1ll*ret * a%mod;
        }
        a = 1ll*a*a%mod;
        b >>= 1;
    }
    return ret;
}
int nCr(int x,int y){
    y = min(y,x-y);
    int ret = 1;
    for(auto u:p){
        int cnt = 0;
        int tmp = u;
        if(u > x)break;
        while(u <= x){
            int l = x - y+1,r = x;
            l = (l + (u - l%u)%u);
            r = (r - (r % u));
            cnt += (r - l)/u + 1;
            l = 1, r = y;
            l = (l + (u - l%u)%u);
            r = (r - (r % u));
            cnt -= (r - l)/u + 1;
            u *= tmp;
        }
        ret = 1ll*ret * binpow(tmp,cnt)%mod;
    }
    return ret;
}
int val[25][25];
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    #ifdef Local
        freopen("in.txt","r",stdin);
        freopen("out.txt","w",stdout);
    #endif
    for(int i=2;i<600005;i++){
        if(!vis[i]){
            p.push_back(i);
            for(int j=2*i;j<600005;j+=i){
                vis[j]=1;
            }
        }
    }
    cin >> n >> m >> k >> t >> mod;
    vector<pair<int,int>> v;
    for(int i=0;i<k;i++){
        int x,y;
        cin >> x >> y;
        v.push_back({x,y});
    }
    v.push_back({0,0});
    v.push_back({n,m});
    sort(v.begin(),v.end());
    dp[0][0] = 1;
    for(int i=1;i<v.size();i++){
        for(int j=0;j<i;j++){
            if(v[j].second <= v[i].second)
                val[i][j] = nCr(v[i].first - v[j].first + v[i].second - v[j].second,v[i].first - v[j].first);
        }
    }
    for(int i=1;i<v.size();i++){
        int sum = 0;
        for(int x = t+1;x>=1 - (i == v.size()-1);x--){
            dp[i][x] = (mod - sum) % mod;
            for(int j=0;j<i;j++){
                if(v[j].second <= v[i].second)
                    dp[i][x] = (dp[i][x] + 1ll*dp[j][x-(i != v.size() - 1)]*val[i][j])%mod;
            }
            sum = (sum + dp[i][x])%mod;
        }       
    }
    int ans = 0;
    for(int i=0;i<=t;i++){
        ans = (ans + dp[v.size()-1][i])%mod;
    }
    cout << ans;
}

Compilation message

turtle.cpp: In function 'int main()':
turtle.cpp:67:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |     for(int i=1;i<v.size();i++){
      |                 ~^~~~~~~~~
turtle.cpp:73:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   73 |     for(int i=1;i<v.size();i++){
      |                 ~^~~~~~~~~
turtle.cpp:75:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   75 |         for(int x = t+1;x>=1 - (i == v.size()-1);x--){
      |                                 ~~^~~~~~~~~~~~~
turtle.cpp:79:59: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   79 |                     dp[i][x] = (dp[i][x] + 1ll*dp[j][x-(i != v.size() - 1)]*val[i][j])%mod;
      |                                                         ~~^~~~~~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Correct 13 ms 3020 KB Output is correct
2 Incorrect 13 ms 3000 KB Output isn't correct
3 Correct 13 ms 3148 KB Output is correct
4 Correct 13 ms 3020 KB Output is correct
5 Correct 14 ms 3008 KB Output is correct
6 Incorrect 13 ms 3028 KB Output isn't correct
7 Correct 13 ms 3020 KB Output is correct
8 Correct 13 ms 3020 KB Output is correct
9 Correct 17 ms 3020 KB Output is correct
10 Correct 18 ms 3020 KB Output is correct
11 Execution timed out 2078 ms 3020 KB Time limit exceeded
12 Execution timed out 2087 ms 3020 KB Time limit exceeded
13 Execution timed out 2079 ms 3044 KB Time limit exceeded
14 Execution timed out 2072 ms 3020 KB Time limit exceeded
15 Execution timed out 2085 ms 3020 KB Time limit exceeded
16 Execution timed out 2078 ms 3020 KB Time limit exceeded
17 Execution timed out 2083 ms 3020 KB Time limit exceeded
18 Execution timed out 2058 ms 3020 KB Time limit exceeded
19 Execution timed out 2087 ms 3020 KB Time limit exceeded
20 Execution timed out 2041 ms 3020 KB Time limit exceeded