제출 #235510

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
235510		dolphingarlic	Languages (IOI10_languages)	C++14	101 / 100	1916 ms	22008 KiB

lang

#include <bits/stdc++.h>
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("O3")
#pragma GCC target("sse4,avx2,fma,avx")
#define FOR(i, x, y) for (int i = x; i < y; i++)
typedef long long ll;
using namespace std;

#include "grader.h"
#include "lang.h"

const int SZ = 100, LANGS = 56, MOD = 98723;

ll si[SZ], bi[SZ], tr[SZ], qu[SZ];
double cnt[LANGS], sim;
int freq[LANGS][MOD];

inline double hyperb(int x) { return x / (x + 1.0); }

void excerpt(int *E) {
    FOR(i, 0, SZ - 3) {
        si[i] = E[i];
        bi[i] = ((si[i] << 16) + E[i + 1]) % MOD;
        tr[i] = ((bi[i] << 16) + E[i + 2]) % MOD;
        qu[i] = ((tr[i] << 16) + E[i + 3]) % MOD;
    }

    int best = 0;
    double best_sim = 0;
    FOR(i, 0, LANGS) {
        sim = 0;
        FOR(j, 0, SZ - 3) {
            sim += hyperb(freq[i][qu[j]]) * 130;
            sim += hyperb(freq[i][tr[j]]) * 44;
            sim += hyperb(freq[i][bi[j]]) * 75;
            sim += hyperb(freq[i][si[j]]) * 1;
        }
        sim /= log(cnt[i] + 1);

        if (sim > best_sim) best = i, best_sim = sim;
    }

    int ans = language(best);
    cnt[ans]++;
    FOR(i, 0, SZ - 3) {
        freq[ans][qu[i]]++;
        freq[ans][tr[i]]++;
        freq[ans][bi[i]]++;
        freq[ans][si[i]]++;
    }
}

• Subtask 1: 30 / 30
• Subtask 2: 71 / 80