Submission #1165159

#	Time	Username	Problem	Language	Result	Execution time	Memory
1165159		renatus	Languages (IOI10_languages)	C++20	102 / 100	1215 ms	118468 KiB

lang

#include <bits/stdc++.h>
#define FOR(i, x, y) for (int i = x; i < y; i++)
typedef long long ll;

#include "grader.h"

const int SZ = 100, LANGS = 56, MOD = 539653;

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

inline double hyperb(int x) { return x / (x + 1.1); }

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) {
        double sim = 0;
        FOR(j, 0, SZ - 3) {
            sim += hyperb(freq[i][qu[j]]) * 6;
            sim += hyperb(freq[i][tr[j]]);
            sim += hyperb(freq[i][bi[j]]) * 4;
            sim += hyperb(freq[i][si[j]]);
        }
        sim /= log(cnt[i] + 2);

        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: 72 / 70