Ответ: //Dev-C++ 4.9.9.2#include <iostream>using namespace std;int main(){  int s1,m1,h1,s2,m2,h2;  cin>>h1>>m1>>s1>>h2>>m2>>s2;  s1=s1+m1*60+h1*3600;  s2=s2+m2*60+h2*3600;  cout<<s2-s1;  cin.get();  cin.get();  return 0;}