#include "bits/stdc++.h" using namespace std; #define PB push_back #define LL long long #define int LL #define FOR(i,a,b) for (int i = (a); i <= (b); i++) #define FORD(i,a,b) for (int i = (a); i >= (b); i--) #define REP(i,n) FOR(i,0,(int)(n)-1) #define st first #define nd second #define ALL(x) (x).begin(), (x).end() #define SZ(x) ((int)(x).size()) #define VI vector<int> #define PII pair<int,int> #define LD long double template<class C> void mini(C& a4, C b4) { a4 = min(a4, b4); } template<class C> void maxi(C& a4, C b4) { a4 = max(a4, b4); } template<class TH> void _dbg(const char *sdbg, TH h){cerr<<sdbg<<"="<<h<<"\n";} template<class TH, class... TA> void _dbg(const char *sdbg, TH h, TA... a) { while(*sdbg!=',')cerr<<*sdbg++;cerr<<"="<<h<<","; _dbg(sdbg+1, a...); } template<class T> ostream &operator<<(ostream &os, vector<T> V){ os<<"[";for(auto vv:V)os<<vv<<",";return os<<"]"; } template<class L, class R> ostream &operator<<(ostream &os, pair<L,R> P) { return os << "(" << P.st << "," << P.nd << ")"; } #ifdef LOCAL #define debug(...) _dbg(#__VA_ARGS__, __VA_ARGS__) #else #define debug(...) (__VA_ARGS__) #define cerr if(0)cout #endif struct T{ function<int(int,int)> upd; int s; int NONE; VI t; VI spych; T(function<int(int,int)> _upd, int _NONE, VI vals){ upd = _upd; NONE = _NONE; s = 1; while(s < SZ(vals)) s *= 2; t = VI(2 * s, NONE); spych = VI(2 * s, 0); REP(i, SZ(vals)){ t[s + i] = vals[i]; } FORD(i, s - 1, 1){ t[i] = upd(t[2 * i], t[2 * i + 1]); } } void spych_down(int x){ for(int y : {2 * x, 2 * x + 1}){ if(t[y] == NONE) continue; t[y] += spych[x]; spych[y] += spych[x]; } spych[x] = 0; } void spych_up(int x){ t[x] = upd(t[2 * x], t[2 * x + 1]); } int L, R; void add(int a, int x, int l, int r){ if(l > R || r < L){ return; } if(l >= L && r <= R){ t[x] += a; spych[x] += a; return; } spych_down(x); int m = (l + r) / 2; add(a, 2 * x, l, m); add(a, 2 * x + 1, m + 1, r); spych_up(x); } void add(int a, int _L, int _R){ L = _L; R = _R; add(a, 1, 0, s - 1); } int get_left(int a, int x, int l, int r){ if(upd(t[x], a) != t[x]){ return -1; } if(l == r) return l; spych_down(x); int m = (l + r) / 2; int res = get_left(a, 2 * x, l, m); if(res == -1){ res = get_left(a, 2 * x + 1, m + 1, r); } return res; } int get_left(int a){ return get_left(a, 1, 0, s - 1); } int get_right(int a, int x, int l, int r){ if(upd(t[x], a) != t[x]){ return -1; } if(l == r) return l; spych_down(x); int m = (l + r) / 2; int res = get_right(a, 2 * x + 1, m + 1, r); if(res == -1){ res = get_right(a, 2 * x, l, m); } return res; } int get_right(int a){ return get_right(a, 1, 0, s - 1); } int get(int a, int x, int l, int r){ if(l == r){ return t[x]; } spych_down(x); int m = (l + r) / 2; if(a <= m){ return get(a, 2 * x, l, m); } else{ return get(a, 2 * x + 1, m + 1, r); } } int get(int a){ return get(a, 1, 0, s - 1); } }; int32_t main() { ios_base::sync_with_stdio(0); cin.tie(0); int n; cin>>n; VI x(n), y(n); REP(i, n){ cin>>x[i]>>y[i]; } REP(limak, n){ VI res(n, 1); res[limak] = x[limak] * y[limak]; for(VI v: {x, y}){ vector<PII> info; REP(i, n){ if(i != limak) info.push_back({v[i], i}); } sort(ALL(info)); VI loc(n); v.clear(); REP(i, n - 1){ loc[info[i].nd] = i; v.push_back(info[i].st); } T tmax([](int a, int b){return max(a,b);}, INT_MIN, v); T tmin([](int a, int b){return min(a,b);}, INT_MAX, v); REP(i, n){ if(i == limak) continue; int idx = loc[i]; int val = tmax.get(idx); int lidx = tmin.get_right(val - 1); int ridx = tmax.get_left(val + 1); if(lidx != -1){ tmin.add(1, 0, lidx); tmax.add(1, 0, lidx); } if(ridx != -1){ tmin.add(-1, ridx, n - 2); tmax.add(-1, ridx, n - 2); } } REP(i, n - 1){ int val = tmax.get(i); res[info[i].nd] *= val; } } int sum = accumulate(ALL(res), 0); cout<<sum<<"\n"; } }
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 | #include "bits/stdc++.h" using namespace std; #define PB push_back #define LL long long #define int LL #define FOR(i,a,b) for (int i = (a); i <= (b); i++) #define FORD(i,a,b) for (int i = (a); i >= (b); i--) #define REP(i,n) FOR(i,0,(int)(n)-1) #define st first #define nd second #define ALL(x) (x).begin(), (x).end() #define SZ(x) ((int)(x).size()) #define VI vector<int> #define PII pair<int,int> #define LD long double template<class C> void mini(C& a4, C b4) { a4 = min(a4, b4); } template<class C> void maxi(C& a4, C b4) { a4 = max(a4, b4); } template<class TH> void _dbg(const char *sdbg, TH h){cerr<<sdbg<<"="<<h<<"\n";} template<class TH, class... TA> void _dbg(const char *sdbg, TH h, TA... a) { while(*sdbg!=',')cerr<<*sdbg++;cerr<<"="<<h<<","; _dbg(sdbg+1, a...); } template<class T> ostream &operator<<(ostream &os, vector<T> V){ os<<"[";for(auto vv:V)os<<vv<<",";return os<<"]"; } template<class L, class R> ostream &operator<<(ostream &os, pair<L,R> P) { return os << "(" << P.st << "," << P.nd << ")"; } #ifdef LOCAL #define debug(...) _dbg(#__VA_ARGS__, __VA_ARGS__) #else #define debug(...) (__VA_ARGS__) #define cerr if(0)cout #endif struct T{ function<int(int,int)> upd; int s; int NONE; VI t; VI spych; T(function<int(int,int)> _upd, int _NONE, VI vals){ upd = _upd; NONE = _NONE; s = 1; while(s < SZ(vals)) s *= 2; t = VI(2 * s, NONE); spych = VI(2 * s, 0); REP(i, SZ(vals)){ t[s + i] = vals[i]; } FORD(i, s - 1, 1){ t[i] = upd(t[2 * i], t[2 * i + 1]); } } void spych_down(int x){ for(int y : {2 * x, 2 * x + 1}){ if(t[y] == NONE) continue; t[y] += spych[x]; spych[y] += spych[x]; } spych[x] = 0; } void spych_up(int x){ t[x] = upd(t[2 * x], t[2 * x + 1]); } int L, R; void add(int a, int x, int l, int r){ if(l > R || r < L){ return; } if(l >= L && r <= R){ t[x] += a; spych[x] += a; return; } spych_down(x); int m = (l + r) / 2; add(a, 2 * x, l, m); add(a, 2 * x + 1, m + 1, r); spych_up(x); } void add(int a, int _L, int _R){ L = _L; R = _R; add(a, 1, 0, s - 1); } int get_left(int a, int x, int l, int r){ if(upd(t[x], a) != t[x]){ return -1; } if(l == r) return l; spych_down(x); int m = (l + r) / 2; int res = get_left(a, 2 * x, l, m); if(res == -1){ res = get_left(a, 2 * x + 1, m + 1, r); } return res; } int get_left(int a){ return get_left(a, 1, 0, s - 1); } int get_right(int a, int x, int l, int r){ if(upd(t[x], a) != t[x]){ return -1; } if(l == r) return l; spych_down(x); int m = (l + r) / 2; int res = get_right(a, 2 * x + 1, m + 1, r); if(res == -1){ res = get_right(a, 2 * x, l, m); } return res; } int get_right(int a){ return get_right(a, 1, 0, s - 1); } int get(int a, int x, int l, int r){ if(l == r){ return t[x]; } spych_down(x); int m = (l + r) / 2; if(a <= m){ return get(a, 2 * x, l, m); } else{ return get(a, 2 * x + 1, m + 1, r); } } int get(int a){ return get(a, 1, 0, s - 1); } }; int32_t main() { ios_base::sync_with_stdio(0); cin.tie(0); int n; cin>>n; VI x(n), y(n); REP(i, n){ cin>>x[i]>>y[i]; } REP(limak, n){ VI res(n, 1); res[limak] = x[limak] * y[limak]; for(VI v: {x, y}){ vector<PII> info; REP(i, n){ if(i != limak) info.push_back({v[i], i}); } sort(ALL(info)); VI loc(n); v.clear(); REP(i, n - 1){ loc[info[i].nd] = i; v.push_back(info[i].st); } T tmax([](int a, int b){return max(a,b);}, INT_MIN, v); T tmin([](int a, int b){return min(a,b);}, INT_MAX, v); REP(i, n){ if(i == limak) continue; int idx = loc[i]; int val = tmax.get(idx); int lidx = tmin.get_right(val - 1); int ridx = tmax.get_left(val + 1); if(lidx != -1){ tmin.add(1, 0, lidx); tmax.add(1, 0, lidx); } if(ridx != -1){ tmin.add(-1, ridx, n - 2); tmax.add(-1, ridx, n - 2); } } REP(i, n - 1){ int val = tmax.get(i); res[info[i].nd] *= val; } } int sum = accumulate(ALL(res), 0); cout<<sum<<"\n"; } } |