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#include <iostream>
#include <vector>

int main()
{
    // initialization
    int numberOfSpeciec = 0;
    std::cin >> numberOfSpeciec;
    int numberOfMowing = 0;
    std::cin >> numberOfMowing;
    std::vector<int> vectorOfSpeeds;
    std::vector<int> vectorOfHigh;
    for (int i=0; i<numberOfSpeciec; i++)
    {
        int speed = 0;
        std::cin >> speed;
        vectorOfSpeeds.push_back(speed);
        vectorOfHigh.push_back(speed);
    }

    std::vector<int> vectorOfMowings;
    for (int i=0; i<numberOfMowing; i++)
    {
        int mowing = 0;
        int trash;
        std::cin >> trash >> mowing;
        vectorOfMowings.push_back(mowing);
    }
    // simulation
    for (int i=0; i<numberOfMowing; i++)
    {
        int sumOfKilograms = 0;
        for (int j=0; j<numberOfSpeciec; j++)
        {
            int diff = vectorOfHigh[j] - vectorOfMowings[i];
            if (diff > 0)
            {
                sumOfKilograms += diff;
                vectorOfHigh[j] = vectorOfMowings[i];
            }
            vectorOfHigh[j] += vectorOfSpeeds[j];
        }
        std::cout << sumOfKilograms << std::endl;
    }
    
    return 0;
}