Submission #617858

# Submission time Handle Problem Language Result Execution time Memory
617858 2022-08-01T15:40:43 Z happypotato Fountain Parks (IOI21_parks) C++17
30 / 100
1189 ms 75732 KB
#include "parks.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define pii pair<int, int>
#define ff first
#define ss second
const int mxN = 2e5 + 1;
const int dx[mxN] = {0, 1, 0, -1}, dy[mxN] = {1, 0, -1, 0};
bool vis[mxN];
pair<pii, int> pts[mxN];
pii opts[mxN];
map<pii, int> allpts;
int n;
vector<pii> edges;
map<pair<pii, pii>, int> alledges;
vector<pii> imp;
bool CheckConnected() {
    queue<pii> q;
    set<pii> track;
    q.push(pts[0].ff);
    track.insert(pts[0].ff);
    while (!q.empty()) {
        pii cur = q.front();
        q.pop();
        for (int k = 0; k < 4; k++) {
            int nx = cur.ff + dx[k] * 2;
            int ny = cur.ss + dy[k] * 2;
            if (allpts.find({nx, ny}) != allpts.end() && track.find({nx, ny}) == track.end()) {
                q.push({nx, ny});
                track.insert({nx, ny});
                edges.pb({allpts[cur], allpts[{nx, ny}]});
            }
        }
    }
    return (int(track.size()) == n);
}
void st123() {
    int arr[3][mxN + 10];
    for (int i = 0; i < 3; i++) {
        for (int j = 0; j < mxN + 10; j++) {
            arr[i][j] = -1;
        }
    }
    for (int i = 0; i < n; i++) {
        arr[(pts[i].ff.ff >> 1) - 1][pts[i].ff.ss] = pts[i].ss;
    }
    bool con01 = false, con12 = false;
    bool notfix = false;
    vector<int> u, v, a, b;
    for (int i = 0; i < mxN + 6; i += 2) {
        // if (i <= 10) cout << arr[0][i] << ' ' << arr[1][i] << ' ' << arr[2][i] << endl;
        if (arr[0][i] >= 0 && arr[0][i + 2] >= 0) {
            u.pb(arr[0][i]); v.pb(arr[0][i + 2]);
            a.pb(1); b.pb(i + 1);
        }
        if (arr[2][i] >= 0 && arr[2][i + 2] >= 0) {
            u.pb(arr[2][i]); v.pb(arr[2][i + 2]);
            a.pb(7); b.pb(i + 1);
        }
        bool special = false;
        if (notfix) {
            u.pb(arr[0][i]); v.pb(arr[1][i]);
            a.pb(3); b.pb(i + 1);
            special = true;
            notfix = false;
        }
        bool usemid = false;
        if (!(arr[1][i + 2] >= 0 && arr[2][i + 2] >= 0 && !con12)) special = true;
        if (arr[1][i] >= 0 && arr[1][i + 2] >= 0) {
            u.pb(arr[1][i]); v.pb(arr[1][i + 2]);
            a.pb((special ? 5 : 3)); b.pb(i + 1);
            usemid = !special;
        }
        if (arr[0][i + 2] >= 0 && arr[1][i + 2] >= 0 && !con01) {
            if (!usemid) {
                u.pb(arr[0][i + 2]); v.pb(arr[1][i + 2]);
                a.pb(3); b.pb(i + 1);
            } else notfix = true;
            con01 = true;
        } else con01 = false;
        if (arr[1][i + 2] >= 0 && arr[2][i + 2] >= 0 && !con12) {
            u.pb(arr[1][i + 2]); v.pb(arr[2][i + 2]);
            a.pb(5); b.pb(i + 1);
            con12 = true;
        } else con12 = false;
    }
    build(u, v, a, b);
    return;
}
void st45() {
    set<pair<pii, pii> > edgeset;
    for (pii &cur : edges) {
        pair<pii, pii> edge = {opts[cur.ff], opts[cur.ss]};
        if (edge.ff.ff > edge.ss.ff) {
            swap(edge.ff, edge.ss);
            swap(cur.ff, cur.ss);
        } else if (edge.ff.ff == edge.ss.ff && edge.ff.ss > edge.ss.ss) {
            swap(edge.ff, edge.ss);
            swap(cur.ff, cur.ss);
        }
        edgeset.insert(edge);
    }
    vector<int> ordering[4];
    for (int i = 0; i < int(edges.size()); i++) {
        pii fir = opts[edges[i].ff], sec = opts[edges[i].ss];
        alledges[{fir, sec}] = i;
        pii important;
        bool left, right, middle;
        if (fir.ff == sec.ff) {
            // -2
            left = (edgeset.find({{fir.ff - 2, fir.ss}, fir}) != edgeset.end());
            right = (edgeset.find({{sec.ff - 2, sec.ss}, sec}) != edgeset.end());
            middle = (edgeset.find({{fir.ff - 2, fir.ss}, {sec.ff - 2, sec.ss}}) != edgeset.end());
            if (left && right) important.ff = 3;
            else if (middle) important.ff = 2;
            else if (left || right) important.ff = 1;
            else important.ff = 0;
            // +2
            left = (edgeset.find({fir, {fir.ff + 2, fir.ss}}) != edgeset.end());
            right = (edgeset.find({sec, {sec.ff + 2, sec.ss}}) != edgeset.end());
            middle = (edgeset.find({{fir.ff + 2, fir.ss}, {sec.ff + 2, sec.ss}}) != edgeset.end());
            if (left && right) important.ss = 3;
            else if (middle) important.ss = 2;
            else if (left || right) important.ss = 1;
            else important.ss = 0;
        } else if (fir.ss == sec.ss) {
            // -2
            left = (edgeset.find({{fir.ff, fir.ss - 2}, fir}) != edgeset.end());
            right = (edgeset.find({{sec.ff, sec.ss - 2}, sec}) != edgeset.end());
            middle = (edgeset.find({{fir.ff, fir.ss - 2}, {sec.ff, sec.ss - 2}}) != edgeset.end());
            if (left && right) important.ff = 3;
            else if (middle) important.ff = 2;
            else if (left || right) important.ff = 1;
            else important.ff = 0;
            // +2
            left = (edgeset.find({fir, {fir.ff, fir.ss + 2}}) != edgeset.end());
            right = (edgeset.find({sec, {sec.ff, sec.ss + 2}}) != edgeset.end());
            middle = (edgeset.find({{fir.ff, fir.ss + 2}, {sec.ff, sec.ss + 2}}) != edgeset.end());
            if (left && right) important.ss = 3;
            else if (middle) important.ss = 2;
            else if (left || right) important.ss = 1;
            else important.ss = 0;
        }
        imp.pb(important);
        ordering[max(important.ff, important.ss)].pb(i);
    }
    int m = edges.size();
    vector<pii> coor(m);
    set<pii> appear;
    for (int urgency = 3; urgency >= 0; urgency--) {
        for (int &starting : ordering[urgency]) {
            if (vis[starting]) continue;
            queue<int> q;
            q.push(starting);
            vis[starting] = true;
            while (!q.empty()) {
                int cur = q.front();
                q.pop();
                pii fir = opts[edges[cur].ff], sec = opts[edges[cur].ss];
                if (imp[cur].ff >= imp[cur].ss && appear.find({fir.ff + 1, fir.ss + 1}) == appear.end()) {
                    // add
                    coor[cur] = {fir.ff + 1, fir.ss + 1};
                    if (alledges.find({fir, {fir.ff + 2, fir.ss}}) != alledges.end()) {
                        int ptr = alledges[{fir, {fir.ff + 2, fir.ss}}];
                        if (!vis[ptr]) {
                            q.push(ptr);
                            vis[ptr] = true;
                        }
                    }
                    if (alledges.find({fir, {fir.ff, fir.ss + 2}}) != alledges.end()) {
                        int ptr = alledges[{fir, {fir.ff, fir.ss + 2}}];
                        if (!vis[ptr]) {
                            q.push(ptr);
                            vis[ptr] = true;
                        }
                    }
                    if (alledges.find({{fir.ff + 2, fir.ss}, {fir.ff + 2, fir.ss + 2}}) != alledges.end()) {
                        int ptr = alledges[{{fir.ff + 2, fir.ss}, {fir.ff + 2, fir.ss + 2}}];
                        if (!vis[ptr]) {
                            q.push(ptr);
                            vis[ptr] = true;
                        }
                    }
                    if (alledges.find({{fir.ff, fir.ss + 2}, {fir.ff + 2, fir.ss + 2}}) != alledges.end()) {
                        int ptr = alledges[{{fir.ff, fir.ss + 2}, {fir.ff + 2, fir.ss + 2}}];
                        if (!vis[ptr]) {
                            q.push(ptr);
                            vis[ptr] = true;
                        }
                    }
                } else if (appear.find({sec.ff - 1, sec.ss - 1}) == appear.end()) {
                    // minus
                    coor[cur] = {sec.ff - 1, sec.ss - 1};
                    if (alledges.find({{sec.ff - 2, sec.ss}, sec}) != alledges.end()) {
                        int ptr = alledges[{{sec.ff - 2, sec.ss}, sec}];
                        if (!vis[ptr]) {
                            q.push(ptr);
                            vis[ptr] = true;
                        }
                    }
                    if (alledges.find({{sec.ff, sec.ss - 2}, sec}) != alledges.end()) {
                        int ptr = alledges[{{sec.ff, sec.ss - 2}, sec}];
                        if (!vis[ptr]) {
                            q.push(ptr);
                            vis[ptr] = true;
                        }
                    }
                    if (alledges.find({{sec.ff - 2, sec.ss - 2}, {sec.ff - 2, sec.ss}}) != alledges.end()) {
                        int ptr = alledges[{{sec.ff - 2, sec.ss - 2}, {sec.ff - 2, sec.ss}}];
                        if (!vis[ptr]) {
                            q.push(ptr);
                            vis[ptr] = true;
                        }
                    }
                    if (alledges.find({{sec.ff - 2, sec.ss - 2}, {sec.ff, sec.ss - 2}}) != alledges.end()) {
                        int ptr = alledges[{{sec.ff - 2, sec.ss - 2}, {sec.ff, sec.ss - 2}}];
                        if (!vis[ptr]) {
                            q.push(ptr);
                            vis[ptr] = true;
                        }
                    }
                } else throw runtime_error("fucked up");
                appear.insert(coor[cur]);
                cout << edges[cur].ff << ' ' << edges[cur].ss << ' ' << coor[cur].ff << ' ' << coor[cur].ss << endl;
            }
        }
    }
    vector<int> u(m), v(m), a(m), b(m);
    for (int i = 0; i < m; i++) {
        u[i] = edges[i].ff;
        v[i] = edges[i].ss;
        a[i] = coor[i].ff;
        b[i] = coor[i].ss;
    }
    build(u, v, a, b);
    return;
}
int construct_roads(vector<int> ox, vector<int> oy) {
    n = ox.size();
    int maxx = 0;
    for (int i = 0; i < n; i++) {
        pts[i] = {{ox[i], oy[i]}, i};
        opts[i] = pts[i].ff;
        allpts[pts[i].ff] = i;
        maxx = max(maxx, pts[i].ff.ff);
    }
    // for (int i = 0; i < n; i++) {
    //     cout << pts[i].ff.ff << ' ' << pts[i].ff.ss << ' ' << pts[i].ss << endl;
    // }
    if (!CheckConnected()) return 0;
    if (maxx <= 6) st123();
    else st45();
    return 1;
}
# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 162 ms 20288 KB Output is correct
10 Correct 14 ms 4564 KB Output is correct
11 Correct 95 ms 11908 KB Output is correct
12 Correct 37 ms 5380 KB Output is correct
13 Correct 41 ms 6292 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 165 ms 20740 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 162 ms 20288 KB Output is correct
10 Correct 14 ms 4564 KB Output is correct
11 Correct 95 ms 11908 KB Output is correct
12 Correct 37 ms 5380 KB Output is correct
13 Correct 41 ms 6292 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 165 ms 20740 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 1 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 2644 KB Output is correct
23 Correct 437 ms 40792 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 3 ms 2900 KB Output is correct
26 Correct 2 ms 684 KB Output is correct
27 Correct 3 ms 724 KB Output is correct
28 Correct 143 ms 18088 KB Output is correct
29 Correct 270 ms 25532 KB Output is correct
30 Correct 346 ms 34896 KB Output is correct
31 Correct 474 ms 41808 KB Output is correct
32 Correct 2 ms 2644 KB Output is correct
33 Correct 1 ms 2644 KB Output is correct
34 Correct 1 ms 2644 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 2 ms 2644 KB Output is correct
38 Correct 1 ms 2644 KB Output is correct
39 Correct 1 ms 2644 KB Output is correct
40 Correct 1 ms 2644 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 2 ms 2644 KB Output is correct
43 Correct 1 ms 468 KB Output is correct
44 Correct 3 ms 596 KB Output is correct
45 Correct 163 ms 20868 KB Output is correct
46 Correct 308 ms 30200 KB Output is correct
47 Correct 257 ms 30084 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 162 ms 20288 KB Output is correct
10 Correct 14 ms 4564 KB Output is correct
11 Correct 95 ms 11908 KB Output is correct
12 Correct 37 ms 5380 KB Output is correct
13 Correct 41 ms 6292 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 165 ms 20740 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 1 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 2644 KB Output is correct
23 Correct 437 ms 40792 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 3 ms 2900 KB Output is correct
26 Correct 2 ms 684 KB Output is correct
27 Correct 3 ms 724 KB Output is correct
28 Correct 143 ms 18088 KB Output is correct
29 Correct 270 ms 25532 KB Output is correct
30 Correct 346 ms 34896 KB Output is correct
31 Correct 474 ms 41808 KB Output is correct
32 Correct 2 ms 2644 KB Output is correct
33 Correct 1 ms 2644 KB Output is correct
34 Correct 1 ms 2644 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 2 ms 2644 KB Output is correct
38 Correct 1 ms 2644 KB Output is correct
39 Correct 1 ms 2644 KB Output is correct
40 Correct 1 ms 2644 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 2 ms 2644 KB Output is correct
43 Correct 1 ms 468 KB Output is correct
44 Correct 3 ms 596 KB Output is correct
45 Correct 163 ms 20868 KB Output is correct
46 Correct 308 ms 30200 KB Output is correct
47 Correct 257 ms 30084 KB Output is correct
48 Correct 2 ms 2644 KB Output is correct
49 Correct 2 ms 2644 KB Output is correct
50 Correct 2 ms 2644 KB Output is correct
51 Correct 2 ms 2644 KB Output is correct
52 Correct 3 ms 2644 KB Output is correct
53 Correct 2 ms 2644 KB Output is correct
54 Correct 1 ms 2644 KB Output is correct
55 Correct 497 ms 41572 KB Output is correct
56 Correct 1 ms 2644 KB Output is correct
57 Correct 4 ms 3028 KB Output is correct
58 Correct 11 ms 3796 KB Output is correct
59 Correct 8 ms 1364 KB Output is correct
60 Correct 198 ms 21848 KB Output is correct
61 Correct 277 ms 30000 KB Output is correct
62 Correct 378 ms 36460 KB Output is correct
63 Correct 457 ms 41564 KB Output is correct
64 Correct 1 ms 212 KB Output is correct
65 Correct 2 ms 2644 KB Output is correct
66 Correct 0 ms 212 KB Output is correct
67 Correct 402 ms 38172 KB Output is correct
68 Correct 390 ms 38168 KB Output is correct
69 Correct 376 ms 38768 KB Output is correct
70 Correct 4 ms 724 KB Output is correct
71 Correct 5 ms 1108 KB Output is correct
72 Correct 194 ms 20248 KB Output is correct
73 Correct 295 ms 30460 KB Output is correct
74 Correct 440 ms 38188 KB Output is correct
75 Correct 471 ms 40432 KB Output is correct
76 Correct 447 ms 39016 KB Output is correct
77 Correct 4 ms 980 KB Output is correct
78 Correct 7 ms 1364 KB Output is correct
79 Correct 196 ms 21408 KB Output is correct
80 Correct 314 ms 31744 KB Output is correct
81 Correct 425 ms 39808 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 162 ms 20288 KB Output is correct
10 Correct 14 ms 4564 KB Output is correct
11 Correct 95 ms 11908 KB Output is correct
12 Correct 37 ms 5380 KB Output is correct
13 Correct 41 ms 6292 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 165 ms 20740 KB Output is correct
17 Incorrect 0 ms 212 KB Possible tampering with the output
18 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 162 ms 20288 KB Output is correct
10 Correct 14 ms 4564 KB Output is correct
11 Correct 95 ms 11908 KB Output is correct
12 Correct 37 ms 5380 KB Output is correct
13 Correct 41 ms 6292 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 165 ms 20740 KB Output is correct
17 Incorrect 1189 ms 75732 KB Possible tampering with the output
18 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 2 ms 2644 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 2 ms 2644 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 162 ms 20288 KB Output is correct
10 Correct 14 ms 4564 KB Output is correct
11 Correct 95 ms 11908 KB Output is correct
12 Correct 37 ms 5380 KB Output is correct
13 Correct 41 ms 6292 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 468 KB Output is correct
16 Correct 165 ms 20740 KB Output is correct
17 Correct 2 ms 2644 KB Output is correct
18 Correct 1 ms 2644 KB Output is correct
19 Correct 2 ms 2644 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 2644 KB Output is correct
23 Correct 437 ms 40792 KB Output is correct
24 Correct 2 ms 2644 KB Output is correct
25 Correct 3 ms 2900 KB Output is correct
26 Correct 2 ms 684 KB Output is correct
27 Correct 3 ms 724 KB Output is correct
28 Correct 143 ms 18088 KB Output is correct
29 Correct 270 ms 25532 KB Output is correct
30 Correct 346 ms 34896 KB Output is correct
31 Correct 474 ms 41808 KB Output is correct
32 Correct 2 ms 2644 KB Output is correct
33 Correct 1 ms 2644 KB Output is correct
34 Correct 1 ms 2644 KB Output is correct
35 Correct 0 ms 212 KB Output is correct
36 Correct 0 ms 212 KB Output is correct
37 Correct 2 ms 2644 KB Output is correct
38 Correct 1 ms 2644 KB Output is correct
39 Correct 1 ms 2644 KB Output is correct
40 Correct 1 ms 2644 KB Output is correct
41 Correct 0 ms 212 KB Output is correct
42 Correct 2 ms 2644 KB Output is correct
43 Correct 1 ms 468 KB Output is correct
44 Correct 3 ms 596 KB Output is correct
45 Correct 163 ms 20868 KB Output is correct
46 Correct 308 ms 30200 KB Output is correct
47 Correct 257 ms 30084 KB Output is correct
48 Correct 2 ms 2644 KB Output is correct
49 Correct 2 ms 2644 KB Output is correct
50 Correct 2 ms 2644 KB Output is correct
51 Correct 2 ms 2644 KB Output is correct
52 Correct 3 ms 2644 KB Output is correct
53 Correct 2 ms 2644 KB Output is correct
54 Correct 1 ms 2644 KB Output is correct
55 Correct 497 ms 41572 KB Output is correct
56 Correct 1 ms 2644 KB Output is correct
57 Correct 4 ms 3028 KB Output is correct
58 Correct 11 ms 3796 KB Output is correct
59 Correct 8 ms 1364 KB Output is correct
60 Correct 198 ms 21848 KB Output is correct
61 Correct 277 ms 30000 KB Output is correct
62 Correct 378 ms 36460 KB Output is correct
63 Correct 457 ms 41564 KB Output is correct
64 Correct 1 ms 212 KB Output is correct
65 Correct 2 ms 2644 KB Output is correct
66 Correct 0 ms 212 KB Output is correct
67 Correct 402 ms 38172 KB Output is correct
68 Correct 390 ms 38168 KB Output is correct
69 Correct 376 ms 38768 KB Output is correct
70 Correct 4 ms 724 KB Output is correct
71 Correct 5 ms 1108 KB Output is correct
72 Correct 194 ms 20248 KB Output is correct
73 Correct 295 ms 30460 KB Output is correct
74 Correct 440 ms 38188 KB Output is correct
75 Correct 471 ms 40432 KB Output is correct
76 Correct 447 ms 39016 KB Output is correct
77 Correct 4 ms 980 KB Output is correct
78 Correct 7 ms 1364 KB Output is correct
79 Correct 196 ms 21408 KB Output is correct
80 Correct 314 ms 31744 KB Output is correct
81 Correct 425 ms 39808 KB Output is correct
82 Incorrect 0 ms 212 KB Possible tampering with the output
83 Halted 0 ms 0 KB -