Submission #733374

#	Time	Username	Problem	Language	Result	Execution time	Memory
733374		quanlt206	Modsum (NOI12_modsum)	C++14	25 / 25	72 ms	340 KiB

modsum

#include<bits/stdc++.h>
#define X first
#define Y second
#define all(x) begin(x), end(x)
#define FOR(i, a, b) for(int i = (a); i <= (b); i++)
#define FORD(i, b, a) for(int i = (b); i >= (a); i--)
#define REP(i, a, b) for (int i = (a); i < (b); i++)
#define mxx max_element
#define mnn min_element
#define SQR(x) (1LL * (x) * (x))
#define MASK(i) (1LL << (i))
#define Point Vector
#define left Left
#define right Right
#define div Div

using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ld;
typedef pair<db, db> pdb;
typedef pair<ld, ld> pld;
typedef pair<int, int> pii;
typedef pair<int, pii> piii;
typedef pair<ll, ll> pll;
typedef pair<ll, pll> plll;
typedef pair<ll, int> pli;
typedef pair<ll, pii> plii;

template<class A, class B>
    bool maximize(A& x, B y) {
        if (x < y) return x = y, true; else return false;
    }
template<class A, class B>
    bool minimize(A& x, B y) {
        if (x > y) return x = y, true; else return false;
    }

/* END OF TEMPLATE */

const int N = 1007;

int a[N], b[N], res, n;

void dq(int i, int sum) {
    if (i > n) res = res + (sum * sum * sum * sum + 2 * sum * sum) % 5 + 1;
    if (i <= n) {
        FOR(x, a[i], b[i]) dq(i + 1, (sum + x) % 5);
    }
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cin>>n;
    FOR(i, 1, n) cin>>a[i]>>b[i];
    dq(1, 0);
    cout<<res;
    return 0;
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 5 / 5