Submission #390763

#	Time	Username	Problem	Language	Result	Execution time	Memory
390763		Sorting	Languages (IOI10_languages)	C++17	Compilation error	0 ms	0 KiB

lang

#include <bits/stdc++.h>
#include "grader.h"
#include "lang.h"

using namespace std;

typedef double ld;
const int N = 100;
const int LANG = 64;
const int MAX_CHAR = 65536;

int *e;
int cnt[LANG];
map<pair<int, int>, int> pair_cnt[LANG];
int char_cnt[LANG][MAX_CHAR];

void excerpt(int *_e){
    e = _e;

    map<int, int> mp;
    for(int i = 0; i < N; ++i)
        mp[e[i]]++;

    ld best_sim = 0.0;
    int best_guess = 0;
    for(int guess = 0; guess < 56; ++guess){
        if(!cnt[guess]) continue;

        ld curr_sim = 0;
        //for(int i = 0; i < N - 1; ++i){
        //    if(!pair_cnt[guess].count({e[i], e[i + 1]})) continue;
        //    curr_sim += (ld)pair_cnt[guess][{e[i], e[i + 1]}] / (ld)cnt[guess];
        //}
        for(auto [x, cnt]: mp)
            curr_sim += abs((ld)char_cnt[guess][x] / (ld)cnt[guess] - (ld)cnt);
        if(curr_sim > best_sim){
            best_sim = curr_sim;
            best_guess = guess;
        }
    }

    int ans = language(best_guess);
    ++cnt[ans];
    // for(int i = 0; i < N - 1; ++i)
        // pair_cnt[ans][{e[i], e[i + 1]}]++;
    for(int i = 0; i < N; ++i)
        char_cnt[ans][e[i]]++;
}

Compilation message (stderr)

lang.cpp: In function 'void excerpt(int*)':
lang.cpp:35:67: error: invalid types 'std::tuple_element<1, std::pair<const int, int> >::type {aka int}[int]' for array subscript
   35 |             curr_sim += abs((ld)char_cnt[guess][x] / (ld)cnt[guess] - (ld)cnt);
      |                                                                   ^