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답안 #376280

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
376280 2021-03-11T07:17:10 Z ijxjdjd Intergalactic ship (IZhO19_xorsum) C++14
100 / 100
 1717 ms 6420 KB 
#include <bits/stdc++.h>
#define FR(i, N) for (int i = 0; i < int(N); i++)
#define all(x) begin(x), end(x)

using namespace std;

using ll = long long;

const int MAXK = 7;
const int MAXN = 1000 + 5;
const int MAXQ = (int)(1e5) + 5;
int flip[MAXN][MAXK];
int dblflip[MAXN][MAXK][MAXK];
int cur[MAXK][MAXK];
int mv[MAXK][MAXK];
bool arr[MAXN][MAXK];

vector<pair<int, int>> add[MAXN];
vector<pair<int, int>> rem[MAXN];

ll pows[MAXQ];
ll MOD = (int)(1e9) + 7;
struct Query {
    int l, r, x;
};
ll even(ll i) {
    if (i == 0) {
        return 1;
    }
    else {
        return pows[i-1];
    }
}
ll odd(ll i) {
    if (i == 0) {
        return 0;
    }
    else {
        return pows[i-1];
    }
}
ll mul(ll a, ll b) {
    return (a*b)%MOD;
}
ll sm2(int i, int j, vector<int>& a) {
    ll res = 0;
    for (int id = i; id <= j; id++) {
        res += a[id];
    }
    return res*res;
}
ll sm(vector<int>& a) {
    ll res = 0;
    for (int i = 0; i < a.size(); i++) {
        for (int j = i; j < a.size(); j++) {
            res += sm2(i, j, a);
        }
    }
    return res;
}
ll fullCalc(vector<Query> q, vector<int> av) {
    ll res = 0;
    for (int i = 0; i < (1<<q.size()); i++) {
        vector<int> next(all(av));
        for (int j = 0; j < q.size(); j++) {
            if ((1<<j)&i) {
                for (int k = q[j].l; k <= q[j].r; k++) {
                    next[k] ^= q[j].x;
                }
            }
        }
        res += sm(next);
    }
    return res;
}
int main() {
//    freopen("input.in", "r", stdin);
    pows[0] = 1;
    for (int i = 1; i < MAXQ; i++) {
        pows[i] = 2*pows[i-1];
        pows[i] %= MOD;
    }
	cin.tie(0);
	cin.sync_with_stdio(0);
	int N;
	cin >> N;
	vector<int> ori;
	vector<Query> q;
	for (int i = 0; i < N; i++) {
        int a;
        cin >> a;
        ori.push_back(a);
        for (int j = 0; j < MAXK; j++) {
            arr[i][j] = ((1<<j)&(a));
        }
	}
	int Q;
	cin >> Q;
//	vector<pair<int, pair<int, int>>> vec;
	for (int i = 0; i < Q; i++) {
        int l, r, x;
        cin >> l >> r >> x;
        l--, r--;
        add[l].push_back({r, x});
        q.push_back({l, r, x});
//        vec.push_back({l, {r, x}});;
        for (int j = 0; j < MAXK; j++) {
            if ((1<<j)&x) {
                flip[l][j]++;
                flip[r+1][j]--;
            }
        }
	}
//    cout << fullCalc(q, ori) << '\n';
	for (int i = 0; i < MAXK; i++) {
        for (int j = 1; j < N; j++) {
            flip[j][i] += flip[j-1][i];
        }
	}
	ll res = 0;
//	for (int i = 0; i < N; i++) {
//        for (int j = 0; j < N; j++) {
//            for (int b1 = 0; b1 < MAXK; b1++) {
//                for (int b2 = 0; b2 < MAXK; b2++) {
//                    ll X = 0;
//                    ll Y = 0;
//                    ll Z = 0;
//                    for (auto& p : vec) {
//                        if (p.first <= i && i <= p.first.first && ) {
//                            X++;
//                        }
//                        else {
//
//                        }
//                    }
//                }
//            }
//        }
//	}
	for (int i = 0; i < N; i++) {
        for (auto& p : add[i]) {
            for (int j = 0; j < MAXK; j++) {
                for (int k = 0; k < MAXK; k++) {
                    if (((1<<j)&p.second) && ((1<<k)&p.second)) {
                        cur[j][k]++;
                        dblflip[p.first+1][j][k]--;
                    }
                }
            }
            rem[p.first+1].push_back({i, p.second});
        }
        for (auto& p : rem[i]) {
            for (int j = 0; j < MAXK; j++) {
                for (int k = 0; k < MAXK; k++) {
                    if (((1<<j)&p.second) && ((1<<k)&p.second)) {
                        cur[j][k]--;
                    }
                }
            }
        }
        for (int j = 0; j < MAXK; j++) {
            for (int k = 0; k < MAXK; k++) {
                mv[j][k] = cur[j][k];
            }
        }
        for (int j = i; j < N; j++) {
            if (j != i) {
                for (int b1 = 0; b1 < MAXK; b1++) {
                    for (int b2 = 0; b2 < MAXK; b2++) {
                        mv[b1][b2] += dblflip[j][b1][b2];
                    }
                }
            }
            for (int b1 = 0; b1 < MAXK; b1++) {
                for (int b2 = 0; b2 < MAXK; b2++) {
                    int X = flip[i][b1];
                    int Z = flip[j][b2];
                    int Y = mv[b1][b2];
                    X -= Y;
                    Z -= Y;
                    if (arr[i][b1] && arr[j][b2]) {
                        res += mul(i+1, N-j) * (i != j ? 2LL : 1LL)*mul(pows[Q-X-Y-Z], mul(pows[b1+b2], (mul(even(X), mul(even(Y), even(Z)))) + mul(odd(Y), mul(odd(X), odd(Z)))));
                    }
                    else if (!arr[i][b1] && arr[j][b2]) {
                        res += mul(i+1, N-j) *(i != j ? 2LL : 1LL)*mul(pows[Q-X-Y-Z], mul(pows[b1+b2], (mul(odd(X), mul(even(Y), even(Z)))) + mul(odd(Y), mul(even(X), odd(Z)))));
                    }
                    else if (arr[i][b1] && !arr[j][b2]) {
                        res += mul(i+1, N-j)*(i != j ? 2LL : 1LL) * mul(pows[Q-X-Y-Z], mul(pows[b1+b2], (mul(even(X), mul(even(Y), odd(Z)))) + mul(odd(Y), mul(odd(X), even(Z)))));
                    }
                    else {
                        res += mul(i+1, N-j) * (i != j ? 2LL : 1LL) * mul(pows[Q-X-Y-Z], mul(pows[b1+b2], (mul(odd(X), mul(even(Y), odd(Z)))) + mul(odd(Y), mul(even(X), even(Z)))));
                    }
                    res %= MOD;
                }
            }
        }
	}
	cout << res << '\n';
	return 0;
}

Compilation message

xorsum.cpp: In function 'll sm(std::vector<int>&)':
xorsum.cpp:54:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |     for (int i = 0; i < a.size(); i++) {
      |                     ~~^~~~~~~~~~
xorsum.cpp:55:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |         for (int j = i; j < a.size(); j++) {
      |                         ~~^~~~~~~~~~
xorsum.cpp: In function 'll fullCalc(std::vector<Query>, std::vector<int>)':
xorsum.cpp:65:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<Query>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   65 |         for (int j = 0; j < q.size(); j++) {
      |                         ~~^~~~~~~~~~

Subtask #1
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1132 KB Output is correct
2 Correct 1 ms 1132 KB Output is correct
3 Correct 1 ms 1132 KB Output is correct
4 Correct 2 ms 1152 KB Output is correct
5 Correct 2 ms 1132 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1132 KB Output is correct
2 Correct 1 ms 1132 KB Output is correct
3 Correct 1 ms 1132 KB Output is correct
4 Correct 2 ms 1152 KB Output is correct
5 Correct 2 ms 1132 KB Output is correct
6 Correct 8 ms 1132 KB Output is correct
7 Correct 7 ms 1132 KB Output is correct
8 Correct 7 ms 1132 KB Output is correct

Subtask #3
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 59 ms 4384 KB Output is correct
2 Correct 16 ms 1644 KB Output is correct
3 Correct 9 ms 1280 KB Output is correct
4 Correct 9 ms 1260 KB Output is correct

Subtask #4
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 674 ms 1664 KB Output is correct
2 Correct 655 ms 1800 KB Output is correct
3 Correct 601 ms 1388 KB Output is correct
4 Correct 601 ms 1388 KB Output is correct

Subtask #5
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1132 KB Output is correct
2 Correct 2 ms 1132 KB Output is correct
3 Correct 2 ms 1132 KB Output is correct

Subtask #6
11.0 / 11.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1132 KB Output is correct
2 Correct 2 ms 1132 KB Output is correct
3 Correct 2 ms 1132 KB Output is correct
4 Correct 6 ms 1388 KB Output is correct
5 Correct 5 ms 1388 KB Output is correct
6 Correct 5 ms 1388 KB Output is correct
7 Correct 6 ms 1388 KB Output is correct

Subtask #7
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1132 KB Output is correct
2 Correct 1 ms 1132 KB Output is correct
3 Correct 1 ms 1132 KB Output is correct
4 Correct 2 ms 1152 KB Output is correct
5 Correct 2 ms 1132 KB Output is correct
6 Correct 8 ms 1132 KB Output is correct
7 Correct 7 ms 1132 KB Output is correct
8 Correct 7 ms 1132 KB Output is correct
9 Correct 2 ms 1132 KB Output is correct
10 Correct 2 ms 1132 KB Output is correct
11 Correct 2 ms 1132 KB Output is correct
12 Correct 16 ms 1388 KB Output is correct
13 Correct 16 ms 1280 KB Output is correct
14 Correct 9 ms 1260 KB Output is correct
15 Correct 12 ms 1260 KB Output is correct

Subtask #8
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1132 KB Output is correct
2 Correct 1 ms 1132 KB Output is correct
3 Correct 1 ms 1132 KB Output is correct
4 Correct 2 ms 1152 KB Output is correct
5 Correct 2 ms 1132 KB Output is correct
6 Correct 8 ms 1132 KB Output is correct
7 Correct 7 ms 1132 KB Output is correct
8 Correct 7 ms 1132 KB Output is correct
9 Correct 2 ms 1132 KB Output is correct
10 Correct 2 ms 1132 KB Output is correct
11 Correct 2 ms 1132 KB Output is correct
12 Correct 6 ms 1388 KB Output is correct
13 Correct 5 ms 1388 KB Output is correct
14 Correct 5 ms 1388 KB Output is correct
15 Correct 6 ms 1388 KB Output is correct
16 Correct 16 ms 1388 KB Output is correct
17 Correct 16 ms 1280 KB Output is correct
18 Correct 9 ms 1260 KB Output is correct
19 Correct 12 ms 1260 KB Output is correct
20 Correct 485 ms 6264 KB Output is correct
21 Correct 361 ms 5536 KB Output is correct
22 Correct 439 ms 6048 KB Output is correct

Subtask #9
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1132 KB Output is correct
2 Correct 1 ms 1132 KB Output is correct
3 Correct 1 ms 1132 KB Output is correct
4 Correct 2 ms 1152 KB Output is correct
5 Correct 2 ms 1132 KB Output is correct
6 Correct 8 ms 1132 KB Output is correct
7 Correct 7 ms 1132 KB Output is correct
8 Correct 7 ms 1132 KB Output is correct
9 Correct 59 ms 4384 KB Output is correct
10 Correct 16 ms 1644 KB Output is correct
11 Correct 9 ms 1280 KB Output is correct
12 Correct 9 ms 1260 KB Output is correct
13 Correct 674 ms 1664 KB Output is correct
14 Correct 655 ms 1800 KB Output is correct
15 Correct 601 ms 1388 KB Output is correct
16 Correct 601 ms 1388 KB Output is correct
17 Correct 2 ms 1132 KB Output is correct
18 Correct 2 ms 1132 KB Output is correct
19 Correct 2 ms 1132 KB Output is correct
20 Correct 6 ms 1388 KB Output is correct
21 Correct 5 ms 1388 KB Output is correct
22 Correct 5 ms 1388 KB Output is correct
23 Correct 6 ms 1388 KB Output is correct
24 Correct 16 ms 1388 KB Output is correct
25 Correct 16 ms 1280 KB Output is correct
26 Correct 9 ms 1260 KB Output is correct
27 Correct 12 ms 1260 KB Output is correct
28 Correct 485 ms 6264 KB Output is correct
29 Correct 361 ms 5536 KB Output is correct
30 Correct 439 ms 6048 KB Output is correct
31 Correct 1717 ms 6420 KB Output is correct
32 Correct 1274 ms 5908 KB Output is correct
33 Correct 1608 ms 6176 KB Output is correct
34 Correct 1372 ms 5484 KB Output is correct
35 Correct 1371 ms 5528 KB Output is correct
36 Correct 1367 ms 5484 KB Output is correct