Submission #1111281

#	Time	Username	Problem	Language	Result	Execution time	Memory
1111281		huyngodzz	Martian DNA (BOI18_dna)	C++14	100 / 100	24 ms	7572 KiB

dna

    ///huynhocute123///
#include<bits/stdc++.h>
using namespace std;
#define S second
#define F first
#define pii pair<int,int>
#define piii pair<int,pair<int,int>>
#define pb push_back
#define FOR(i, a, b) for(int i = a; i <= b; ++i)
#define REP(i, a, b) for(int i = b; i >= a; --i)
#define ALL(v) v.begin(),v.end()
#define inp(name) if(fopen(name, "r")) freopen(name, "r", stdin);
#define out(name) if(fopen(name, "w")) freopen(name, "w", stdout);
//random_device rd;
//mt19937 rng(rd());
//#pragma GCC optimize ("O3")
//#pragma GCC optimize ("unroll-loops")
//#pragma GCC target("popcnt")
//#define int long long
const int maxN = 2 * 1e5 + 9 ;
const int  modd = 1e9 + 7;
const int base = 2309;
const int MAX = 1e9+9;
const double pi = 3.14159265358979323846;
const double rad = 3.14159265358979323846 /180;
void minimize(int &u, int v){
    if(v < u) u = v;
}
void maximize(int &u, int v){
    if(v > u) u = v;
}
int n, k, t, m, res, a[maxN], mn[maxN], cnt[maxN];
int l, r;
bool vis[maxN];
vector<int> e[maxN];
void solve(){
    cin >> n  >> k >> m;
    FOR(i, 1, n)cin >> a[i];
    FOR(i, 1, m){
        cin >> l >> r;
        mn[l] =r;
    }
    int ck = 0;
    FOR(i , 0 , k -1){
        if(mn[i]  ==0){
                ++ck;
        }
    }
//    cout << ck << " ";
    r = 0;
    res =MAX;
    FOR(i , 1, n){
        while(r <= n && ck != k){
            r++;
            if(r > n)break;
            ++cnt[a[r]];
            if(cnt[a[r]] == mn[a[r]])++ck;
        }
        if(r > n)break;
//        cerr << i << " " << r << '\n';
        minimize(res,r- i +1);
        if(mn[a[i]] == cnt[a[i]])--ck;
        cnt[a[i]]--;
    }
    if(res == MAX)cout << "impossible";
    else cout << res;


}
signed main(){
//    freopen("name.inp","r",stdin);
//    freopen("name.out","w",stdout);
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    inp("task.inp");
//    out("task.out");
    int tc = 1;
   // cin >> tc;
    while( tc-- )solve();
    cerr << '\n' << "Time elapsed: " << (1.0 * clock() / CLOCKS_PER_SEC) << " s\n" ;


}

Compilation message (stderr)

dna.cpp: In function 'int main()':
dna.cpp:12:47: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 | #define inp(name) if(fopen(name, "r")) freopen(name, "r", stdin);
      |                                        ~~~~~~~^~~~~~~~~~~~~~~~~~
dna.cpp:75:5: note: in expansion of macro 'inp'
   75 |     inp("task.inp");
      |     ^~~

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