Submission #69054

#	Time	Username	Problem	Language	Result	Execution time	Memory
69054		mhs4670	Languages (IOI10_languages)	C11	94 / 100	1032 ms	22316 KiB

lang

#if 01

#include <stdlib.h>
#include <stdio.h>

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

#define SZ 100
#define M (100003)
#define LANG (56)
#define P (65537)

typedef long long ll;
const int roll = 3;

ll save[SZ + 1];
//int cnt[LANG][P];
int hcnt[LANG][M];
int vote[LANG];

ll hash(int *E){
	ll hash_value = 0;
	ll p_pow = 1;
	for (int i = 0; i < roll; i++){
		hash_value = (hash_value + E[i] * p_pow) % M;
		p_pow = (p_pow*P) % M;
	}
	return hash_value;
}
void excerpt(int *E) {
	for (int i = 0; i < SZ - roll + 1; i++){
		save[i] = hash(E + i);
	}
	for (int i = 0; i < LANG; i++){
		vote[i] = 0;
		for (int j = 0; j < SZ; j++){
			//if (cnt[i][E[j]])vote[i]++;
			if (i < SZ - roll + 1)
				if (hcnt[i][save[j]])vote[i]++;
		}
	}
	int guess = 0, max = 0;
	for (int i = 0; i < LANG; i++){
		if (max < vote[i])guess = i, max = vote[i];
	}
	int ans = language(guess);
	for (int i = 0; i < SZ; i++){
		//cnt[ans][i]++;
		if (i<SZ - roll + 1) hcnt[ans][save[i]]++;
	}
}

#endif

• Subtask 1: 30 / 30
• Subtask 2: 64 / 80