73题解

(蒟蒻的第一篇题解)大水题,不需要过多讲解. 各位大佬可以从代码中学习/吸取经验.

#include <algorithm>
#include <iostream>
#include <stdio.h>
#include <string.h>
using namespace std;

int main() {
    int p1, p0, f, l, total, basic = 1e7;
    double score = 0, single;
    cin >> p1 >> p0 >> f >> l;
    total = p1 + p0 + f + l;
    single = (double)basic / total;
    score += p1 * (single + 1) + p0 * single + f * (single / 2.);
    if (score >= 9.9e+6) {
        cout << "EX+";
    } else if (score >= 9.8e+6) {
        cout << "EX";
    } else if (score >= 9.5e+6) {
        cout << "AA";
    } else if (score >= 9.2e+6) {
        cout << "A";
    } else if (score >= 8.9e+6) {
        cout << "B";
    } else if (score >= 8.6e+6) {
        cout << "C";
    } else {
        cout << "D";
    }
    return 0;
}