Problem-Solving-codes/speed_limit.cpp at main · Selani00/Problem-Solving-codes · GitHub

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#include<iostream>
#include<vector>
#include<cmath>

using namespace std;

int main(){

    int cases;


    vector<int>dis;
    int x=0;

    cin >> cases;


     while(cases!= -1){
        vector<int>times;


        for(int i=0;i<cases;i++){
            int mile,time;
            cin>> mile>>time;
            int temp1=time;
            times.push_back(temp1);
            if(i==0){
                x=(mile*time);

            }else{
                x=x+(mile*(time-times[i-1]));
            }


        }
        dis.push_back(x);
        cin >> cases;
        x=0;

     }

     for(int j=0;j<dis.size();j++){
        cout<<dis[j]<<" miles"<<endl;
     }

     return 0;


}