Submission #386997

#	Time	Username	Problem	Language	Result	Execution time	Memory
386997		achibasadzishvili	Fish (IOI08_fish)	C++17	0 / 100	3102 ms	43940 KiB

fish

#include<bits/stdc++.h>
#define ll long long
#define f first
#define s second
#define pb push_back
#define mp make_pair
using namespace std;
ll ans;
ll n,k,mod,l[500005];
vector<ll>v[500005],t[500005];
int main(){
    ios::sync_with_stdio(false);
    cin >> n >> k >> mod;
    
    for(int i=1; i<=n; i++){
        ll x,y;
        cin >> x >> y;
        v[y].pb(x);
    }
    
    vector<pair<ll,ll> >g;
    for(int i=1; i<=k; i++){
        sort(v[i].begin() , v[i].end());
        if(v[i].size()){
            g.pb(mp(v[i][v[i].size() - 1] , i));
        }
    }
    
    sort(g.begin() , g.end());
    
    for(int i=0; i<g.size(); i++){
        ll ind = g[i].s;
        t[i] = v[ind];
    }
    
    for(int i=0; i<=k; i++){
        v[i] = t[i];
    }
    
    for(int i=0; i<=k; i++){
        if(v[i].size() == 0)continue;
        ll mx = v[i][(int)v[i].size() - 1],cur = 1;
        for(int j=0; j<=i; j++){
            while(l[j] != v[j].size() && v[j][l[j]] * 2 <= mx){
                l[j]++;
            }
            cur = (cur * (l[j] + 1)) % mod;
        }
        ans = (ans + cur) % mod;
    }
    
    
    cout << ans << '\n';
    
    
    
    return 0;
}

Compilation message (stderr)

fish.cpp: In function 'int main()':
fish.cpp:31:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   31 |     for(int i=0; i<g.size(); i++){
      |                  ~^~~~~~~~~
fish.cpp:44:24: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |             while(l[j] != v[j].size() && v[j][l[j]] * 2 <= mx){
      |                   ~~~~~^~~~~~~~~~~~~~

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