Submission #668579

#	Time	Username	Problem	Language	Result	Execution time	Memory
668579		ktkerem	Martian DNA (BOI18_dna)	C++11	100 / 100	52 ms	6916 KiB

dna

/*#pragma GCC target ("avx2")
#pragma GCC optimize ("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")/**/
#include<bits/stdc++.h>
/**/
//typedef int ll;
typedef long long ll;
typedef unsigned long long ull;
typedef std::string str;
//typedef vector<std::vector<ll>> vv; 
/*typedef __int128 vll;
typedef unsigned __int128 uvll;*/
#define llll std::pair<ll , ll>
#define pb push_back
#define pf push_front
#define halo cout << "hello\n"
#define fi first
#define sec second
#define vv(x) std::vector<std::vector<x>>
#define all(a) a.begin() , a.end()
const ll limit = 1e15+7; 
const ll ous = 3e5 + 7;
const ll dx[4] = {-1 , 0 , 1 , 0} , dy[4] = {0,1,0,-1};
ll n , m , k;std::vector<ll> ar;
std::vector<ll> kt;
ll tot = 0;
ll fd(ll sz){
    std::vector<ll> vt(m+5 , 0);
    ll p = 0;
    for(ll i = 0;sz>i;i++){
        if(kt[ar[i]] > vt[ar[i]]){
            p++;
        }
        vt[ar[i]]++;
    }
    if(p == tot){
        return 1;
    }
    for(ll i = sz;n>i;i++){
        if(kt[ar[i]] > vt[ar[i]]){
            p++;
        }
        vt[ar[i]]++;
        if(kt[ar[i-sz]] >= vt[ar[i-sz]]){
            p--;
        }
        vt[ar[i - sz]]--;   
        if(p == tot){
            return 1;
        }
    }
    if(p == tot){
        return 1;
    }
    return 0;
}
void solve(){
    std::cin >> n >> m >> k;
    kt.resize(m+5 , 0);
    ar.resize(n);
    for(ll i = 0;n>i;i++){
        std::cin >> ar[i];
    }
    for(ll i = 0;k>i;i++){
        ll x , y;std::cin >> x >> y;
        kt[x]+=y;
        tot+=y;
    }
    ll l = 1 , r = n+1;
    while(r > l){
        ll md = (r + l)/2;
        if(fd(md)){
            r = md;
        }
        else{
            l = md + 1;
        }
    }
    if(l == n+1){
        std::cout << "impossible\n";
        return;
    }
    std::cout << l << "\n";
    return;/**/
}
signed main(){
    std::ios_base::sync_with_stdio(false);std::cin.tie(NULL);
    ll t=1;
    //std::cin >> t;
    ll o = 1;
    while(t--){ 
        //cout << "Case " << o++ << ":\n";
        solve();
    }
    return 0;
}/**/

Compilation message (stderr)

dna.cpp:5:78: warning: "/*" within comment [-Wcomment]
    5 | #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")/**/
      |                                                                               
dna.cpp: In function 'int main()':
dna.cpp:92:8: warning: unused variable 'o' [-Wunused-variable]
   92 |     ll o = 1;
      |        ^

• Subtask 1: 16 / 16
• Subtask 2: 24 / 24
• Subtask 3: 28 / 28
• Subtask 4: 32 / 32