Submission #3808091

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Source Code Expand

#include<iostream>
using namespace std;
int main() {
    int check[999] = {0};
    check[0] = 1;
    for (int i = 1; i < 999; i++) {
        check[i] += check[i - 1] + (i + 1);
    }/*
    for (int i = 0; i < 999; i++) {
        cout << check[i] << " ";
    }
    cout << endl;*/
    int a, b;
    cin >> a >> b;
    int ans = 0;
    for (int i = 0; i < 999; i++) {
        if (check[i] - a == check[i + 1] - b) {
            ans = check[i] - a;
            break;
        }
    }
    cout << ans << endl;
}

Submission Info

Judge Result