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  1. #include <iostream>
  2. #include <fstream>
  3. #include <cstring>
  4. using namespace std;
  5.  
  6. int main() {
  7.     ifstream fin("matematica.in");
  8.     ofstream fout("matematica.out");
  9.     long long rez = 0, c, min = 1<<50;
  10.     bool semn = 1;
  11.     char ex[1010];
  12.     cin >> c;
  13.     cin.get();
  14.     cin.getline(ex, 1008);
  15.     long n = strlen(ex);
  16.     long long termen = 0;
  17.     for(long long i = 0; i < n; i++) {
  18.         if(isdigit(ex[i])) {
  19.             termen = termen * 10 + ex[i] - '0';
  20.         } else {
  21.             if(semn) {
  22.                 rez += termen;
  23.                 if(min > termen) {
  24.                     min = termen;
  25.                 }
  26.             } else {
  27.                 rez -= termen;
  28.                 if(min > -termen) {
  29.                     min = -termen;
  30.                 }
  31.             }
  32.             termen = 0;
  33.             if(ex[i] == '-') {
  34.                 semn = 0;
  35.             } else {
  36.                 semn = 1;
  37.             }
  38.         }
  39.     }
  40.     if(semn) {
  41.         rez += termen;
  42.         if(min > termen) {
  43.             min = termen;
  44.         }
  45.     } else {
  46.         rez -= termen;
  47.         if(min > -termen) {
  48.             min = -termen;
  49.         }
  50.     }
  51.     if(c == 1) {
  52.         cout << rez;
  53.     } else {
  54.         cout << rez - 2 * min;
  55.     }
  56. }
  57.  
Success #stdin #stdout 0.01s 5280KB
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https://ideone.com/hrNLdh
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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