Submission #1799923

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Source Code Expand

#include <iostream>
#include <algorithm>
#include <cmath>
#include <vector>
#include <utility> //pairを使う
using namespace std;

typedef unsigned long long ll;

const ll inf = 1000000000000;
const ll mod = 10007;

int main(){
	int k, s, t = 0;
	cin >> k >> s;
	for(int i = 0; i <= k; i++){
		int a, b;
		if(s - i < 0){
			break;
		}
		if(s - i > k * 2){
			continue;
		}
		if(s - i > k){
			a = k; b = s - i - k;
			t += a - b + 1;
		}else{
			a = s - i; b = 0;
			t += a - b + 1;
		}
	}
	cout << t << endl;
	return 0;
}

Submission Info

Judge Result