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Submission #126497

# Submission time Handle Problem Language Result Execution time Memory
126497 2019-07-08T00:11:52 Z letrongdat Sirni (COCI17_sirni) C++17
140 / 140
 3288 ms 513284 KB 
#include <bits/stdc++.h>
using namespace std;
#define forn(i, a, b)               for(int i=a; i<=b; ++i)
#define ford(i, a ,b)               for(int i=a; i>=b; --i)
#define repn(i, a, b)               for(int i=a; i <b; ++i)
typedef pair<int, int> ii;
const int maxM = 1e7+ 10;
const int maxN = 1e5 +10;
int N;
int Near[maxM];
int lab[maxN];
bool flag[maxM];
vector<int> P;
vector<ii> Edge[maxM];
int root(int u) {
    if (lab[u] < 0) return u;
    return lab[u] = root(lab[u]);
}
bool join(int u, int v) {
    int l1 = root(u), l2 = root(v);
    if (l1 == l2) return false;
    if (lab[l1] > lab[l2]) swap(l1, l2);
    lab[l1] += lab[l2];
    lab[l2] = l1;
    return true;
}
int main() {
    ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    memset(lab, -1, sizeof lab);
    cin >> N;
    P.resize(N);
    repn(i, 0, N) cin >> P[i];
    sort(P.begin(), P.end());
    P.resize(unique(P.begin(), P.end()) - P.begin());
    memset(Near, 0x3f, sizeof Near);
    repn(i, 0, P.size()) Near[P[i]] = i;
    ford(i, P.back(), 0) Near[i] = min(Near[i], Near[i+1]);
    repn(i, 0, P.size() -1) {
        int weight = P[Near[P[i]+1]] - P[i];
        Edge[weight].push_back({i, Near[P[i]+1]});
        if (!flag[P[i]]) for(int j = 2*P[i]; j <= P.back(); j += P[i]) {
            flag[j] = true;
            Edge[P[Near[j]] - j].push_back({i, Near[j]});
        }
    }
    long long result = 0;
    repn(i, 0, maxM) {
        for(auto &e: Edge[i]) result += join(e.first, e.second) * i;
    }
    cout << result;
}

Compilation message

sirni.cpp: In function 'int main()':
sirni.cpp:5:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define repn(i, a, b)               for(int i=a; i <b; ++i)
sirni.cpp:36:10:
     repn(i, 0, P.size()) Near[P[i]] = i;
          ~~~~~~~~~~~~~~                             
sirni.cpp:36:5: note: in expansion of macro 'repn'
     repn(i, 0, P.size()) Near[P[i]] = i;
     ^~~~
sirni.cpp:5:52: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
 #define repn(i, a, b)               for(int i=a; i <b; ++i)
sirni.cpp:38:10:
     repn(i, 0, P.size() -1) {
          ~~~~~~~~~~~~~~~~~                          
sirni.cpp:38:5: note: in expansion of macro 'repn'
     repn(i, 0, P.size() -1) {
     ^~~~

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 315 ms 283000 KB Output is correct
2 Correct 965 ms 317304 KB Output is correct
3 Correct 317 ms 285024 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 275 ms 274808 KB Output is correct
2 Correct 3288 ms 513284 KB Output is correct
3 Correct 330 ms 285532 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 317 ms 283256 KB Output is correct
2 Correct 314 ms 280028 KB Output is correct
3 Correct 346 ms 284764 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 357 ms 284072 KB Output is correct
2 Correct 390 ms 292512 KB Output is correct
3 Correct 408 ms 295500 KB Output is correct

Subtask #5
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 297 ms 277752 KB Output is correct
2 Correct 398 ms 290296 KB Output is correct
3 Correct 360 ms 283084 KB Output is correct

Subtask #6
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 570 ms 289104 KB Output is correct
2 Correct 465 ms 295960 KB Output is correct
3 Correct 361 ms 288952 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 298 ms 277640 KB Output is correct
2 Correct 438 ms 296544 KB Output is correct
3 Correct 480 ms 294988 KB Output is correct

Subtask #8
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 551 ms 298772 KB Output is correct
2 Correct 1655 ms 429268 KB Output is correct
3 Correct 560 ms 301556 KB Output is correct

Subtask #9
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 538 ms 302440 KB Output is correct
2 Correct 2205 ms 475368 KB Output is correct
3 Correct 851 ms 355088 KB Output is correct

Subtask #10
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 353 ms 286948 KB Output is correct
2 Correct 2779 ms 442864 KB Output is correct
3 Correct 400 ms 294460 KB Output is correct