0077
#include <iostream>
using namespace std;
int main() {
string str;
while (cin >> str) {
string res = "";
for (int i=0; i<str.length(); i++) {
if (str[i] == '@' && i+2 < str.length()) {
int n = str[i+1] - '0';
for (int j=0; j<n; j++) res += str[i+2];
i+=2;
} else {
res += str[i];
}
}
cout << res << endl;
}
}
0074
#include <cstdio>
int main() {
int res;
int h, m, s;
while (scanf("%d%d%d", &h, &m, &s)) {
res = 120;
if (h==-1&&m==-1&&s==-1) break;
m += h * 60;
res -= m;
if (s != 0) {
res--;
s = 60 - s;
}
h = (int)(res / 60);
m = res - h * 60;
printf("%02d:%02d:%02d\n", h, m, s);
res *= 3;
s *= 3;
res += s / 60;
s -= s / 60 * 60;
h = (int)(res / 60);
m = res - h * 60;
printf("%02d:%02d:%02d\n", h, m, s);
}
}
0073
#include <cstdio>
#include <cmath>
int main() {
int x, h;
while (scanf("%d%d", &x, &h)) {
if (x == 0 && h == 0) break;
double temp1 = sqrt(pow((double)h, 2) + pow((double)x*sqrt(2)/2, 2));
double temp2 = sqrt(pow(temp1, 2) - pow((double)x/2, 2));
double S = pow((double)x, 2) + 2.0 * temp2 * (double)x;
printf("%.6f\n", S);
}
}