제출 #2973

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
2973		kriii	Languages (IOI10_languages)	C++98	75 / 100	4492 ms	1060 KiB

lang

#include <stdlib.h>
#include <stdio.h>
#include <map>
using namespace std;
#include "grader.h"
#include "lang.h"

#define SZ 100

int lan;
map<int, int> cnt[60]; int sum[60];

double pow2(double a){return a * a;}

void excerpt(int *E) {
	int i,k,l,v; double u,x=10000;
	map<int, int> now;
	map<int, int>::iterator I;

	for (k=0;k<100;k++) now[E[k]]++;

	for (i=0;i<lan;i++){
		u = 0;
		for (I=now.begin();I!=now.end();I++) if (cnt[i].count(I->first) == 0){
			u += pow2(I->second / 100.);
		}
		for (I=cnt[i].begin();I!=cnt[i].end();I++){
			if (now.count(I->first) == 0) u += pow2(1. * I->second / sum[i]);
			else u += pow2(1. * I->second / sum[i] - now[I->first] / 100.);
		}

		if (x > u){
			x = u;
			v = i;
		}
	}

	if (lan < 56 && x >= 0.03) v = lan;
	l = language(v);
	if (l == lan) lan++;

	sum[l] += 100;
	for (k=0;k<100;k++) cnt[l][E[k]]++;
}

컴파일 시 표준 에러 (stderr) 메시지

lang.cpp: In function 'void excerpt(int*)':
lang.cpp:39:4: warning: 'v' may be used uninitialized in this function [-Wmaybe-uninitialized]
  l = language(v);
  ~~^~~~~~~~~~~~~

• Subtask 1: 30 / 30
• Subtask 2: 45 / 80