<span>一个写得很*****的differ</span>

#include <cstdio>
#include <cstring>
#include <algorithm>
#include <vector>
#include <cstdlib>

#include <string>
#include <fstream>

using namespace std;

#define LL long long
#define R register

inline int read() {
	int x = 0, f = 1; char a = getchar();
	for(; a > '9' || a < '0'; a = getchar()) if(a == '-') f = -1;
	for(; a >= '0' && a <= '9' ; a = getchar()) x = x * 10 + a - '0';
	return x * f;
}

int main() {
	system("g++ -o circle circle.cpp");
	int sum = 0, ms = 100 / 20;
	for(R int i = 1; i <= 20; i ++) {
		string s = "circle";
		if(i < 10) {
			s += char(i%10 + '0');
		}
		else {
			s += char(i / 10 + '0');
			s += char(i%10 + '0');
		}
		s += ".in";
		ifstream fin(s);
		ofstream fout("circle.in");
		string ts;
		while(fin >> ts) fout<< ts << endl;
		system("./circle");
		s = "circle";
		if(i < 10) {
			s += char(i%10 + '0');
		}
		else {
			s += char(i / 10 + '0');
			s += char(i%10 + '0');
		}
		s += ".out";
		ifstream fin1(s), fin2("circle.out");
		string s1, s2;
		int f = 1;
		while(fin1 >> s1) { fin2 >> s2; if(s1 != s2) {f = 0;break; }}
		if(f) 
		printf("\033[0;32;40m Case %d: Accept!\n", i), sum += ms;
		else printf("\033[0;31;40m Case %d: Warning!\n", i);
	}
	printf("Your mark : %d\n", sum);
}