oj.uz

Submission #99689

# Submission time Handle Problem Language Result Execution time Memory
99689 2019-03-06T06:55:22 Z HardNut Calvinball championship (CEOI15_teams) C++17
10 / 100
 44 ms 32136 KB 
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int N = 2e5 + 5;
const ll INF = 1e18 + 5;
const ll mod = 1e6 + 7;
const int tx[] = {1, -1, 0, 0}, ty[] = {0, 0, 1, -1};
const ll bs = 31;

#define int ll

int n, a[N], b[N], cnt, res[N];
int dp[2][1005][1005];

void rec(int cur = 1, int len = 1) {
    if (len == n) {
        cnt++;
        for (int i = 1; i <= n; i++) {
            if (a[i] != b[i])
                return;
        }
        cout << "CH ";
        cout << cnt % mod;
        exit(0);
    }
    for (int i = 1; i <= cur + 1; i++) {
        b[len + 1] = i;
        rec(max(cur, i), len + 1);
        b[len + 1] = 0;
    }
}

int calc(int id, int mx, int tp) {
//    cout << id << " " << mx << " " << tp << "\n";
    if (dp[tp][id][mx] != -1)
        return dp[tp][id][mx];
    if (id == 1)
        return dp[tp][id][mx] = calc(id + 1, mx + 1, 0);
    return dp[tp][id][mx] = (calc(id + 1, mx, 0) * mx % mod + calc(id + 1, mx + 1, 1)) % mod;
}

main() {
    cin >> n;
    memset(dp, -1, sizeof(dp));
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
        dp[0][n][i] = i;
        dp[1][n][i] = 1;
    }
    b[1] = 1;
//    rec();
    int ans = 0;
    int mx = 0;
    for (int i = 1; i < n; i++) {
        for (int j = 1; j < a[i]; j++) {
//            cout << i + 1 << " ";
//            cout << calc(i + 1, max(mx + 1, j + 1), 0) << "\n";
            ans = (ans + calc(i + 1, max(mx + 1, j + 1), 0)) % mod;
        }
        mx = max(mx, a[i]);
    }
    cout << (ans + a[n]) % mod;
    return 0;
}
/**
4
1 2 2 3
*/

Compilation message

teams.cpp:47:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 16128 KB Output is correct
2 Correct 17 ms 16128 KB Output is correct
3 Correct 17 ms 16128 KB Output is correct
4 Correct 15 ms 16128 KB Output is correct
5 Correct 15 ms 16164 KB Output is correct
6 Correct 15 ms 16128 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 16124 KB Output is correct
2 Incorrect 14 ms 16128 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 19 ms 16188 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 18 ms 16128 KB Output isn't correct

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 15 ms 16128 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 22 ms 16256 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 44 ms 16256 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 43 ms 32136 KB Execution killed with signal 11 (could be triggered by violating memory limits)

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 41 ms 32120 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 37 ms 32128 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -