---
tags: nctu_1173
---

# 2020.10.19

[TOC]

---

## A. 閏年

main() {
    int n;
    scanf("%d", &n);
    printf("%d\n", 365 + !(n & 3 || (n % 100 ? 0 : (n / 100) & 3)));
}

## B. Triangle

main() {
    int a, b, c, tmp;
    scanf("%d %d %d", &a, &b, &c);
    if (a < b) a ^= b ^= a ^= b;
    if (a < c) a ^= c ^= a ^= c;
    if (b + c <= a) printf("OOPS\n");
    else if (b*b + c*c == a*a) printf("right triangle\n");
    else if (b*b + c*c >  a*a) printf("acute triangle\n");
    else printf("obtuse triangle\n");
}

## C. 電費 QAQ

main() {
    int n, ans = 0;
    scanf("%d", &n);
    int a[] = {163, 238, 352, 480, 566, 641};
    if (n >=  120) ans += a[0] * ( 120 -    0);
    else ans += a[0] * n;
    if (n >=  330) ans += a[1] * ( 330 -  120);
    else if (n > 120) ans += a[1] * (n - 120);
    if (n >=  500) ans += a[2] * ( 500 -  330);
    else if (n > 330) ans += a[2] * (n - 330);
    if (n >=  700) ans += a[3] * ( 700 -  500);
    else if (n > 500) ans += a[3] * (n - 500);
    if (n >= 1000) ans += a[4] * (1000 -  700);
    else if (n > 700) ans += a[4] * (n - 700);
    if (n >= 1000) ans += a[5] * (   n - 1000);
    printf("%d\n", ans / 100 + (ans % 100 >= 50));
}

## D. 猜數字 A

main() {
    int a, b, c, d;
    scanf("%d %d %d %d", &a, &b, &c, &d);
         if (a == c && b == d) printf("2A0B\n");
    else if (a == d && b == c) printf("0A2B\n");
    else if (a == c || b == d) printf("1A0B\n");
    else if (a == d || b == c) printf("0A1B\n");
    else printf("0A0B\n");
}

## E. 猜數字 B

main() {
    int a[10], b[10], ans = 0;
    for (int i = 0; i < 10; ++i) scanf("%d", a+i);
    for (int i = 0; i < 10; ++i) scanf("%d", b+i);
    for (int i = 0; i < 10; ++i) ans += a[i] == b[i];
    printf("%dA%dB\n", ans, 10 - ans);
}

## F. 猜數字 C

main() {
    int a[10], b[10], ca = 0, cb = 0;
    for (int i = 0; i < 9; ++i) scanf("%d", a+i);
    for (int i = 0; i < 9; ++i) scanf("%d", b+i);
    for (int i = 0; i < 9; ++i) ca += a[i] == b[i];
    for (int i = 0; i < 9; ++i) {
        for (int j = 0; j < 9; ++j) cb += i != j && a[i] == b[j];
    }
    printf("%dA%dB\n", ca, cb);
}