Codeforces Round #368 Div. 2

#include <iostream>
using namespace std;
int main() {
    int N, M;
    char ch;
    cin >> N >> M;
    for (int i = 0; i < N * M; i++) {
        cin >> ch;
        if (ch == 'C' || ch == 'M' || ch == 'Y') {
            cout << "#Color" << endl;
            return 0;
        }
    }
    cout<<"#Black&White"<<endl;
    return 0;
}

#include <iostream>
#include <string.h>
using namespace std;
int a[110000], b[110000];
long long c[110000];
bool v[110000];
int main() {
    int N, M, K;
    char ch;
    cin >> N >> M >> K;
    for (int i = 0; i < M; i++)
        cin >> a[i] >> b[i] >> c[i];
    memset(v, false, sizeof(v));
    for (int i = 0; i < K; i++) {
        int x;
        cin >> x;
        v[x] = true;
    }
    long long ans = 0x7FFFFFFFFFFFFFFF;
    for (int i = 0; i < M; i++) {
        if ((v[a[i]]^v[b[i]]) && c[i] < ans)
            ans = c[i];
    }
    if (ans == 0x7FFFFFFFFFFFFFFF) {
        cout << -1 << endl;
    } else {
        cout << ans << endl;
    }
    return 0;
}

#include<bits/stdc++.h>
using namespace std;
int main() {
    long long x, a;
    cin >> x;
    if (x == 1 || x == 2) {
        cout << -1 << endl;
        return 0;
    }
    if (x % 2 == 1) {
        a = (x * x + 1) / 2;
        cout << a << ' ' << a - 1 << endl;
    } else {
        a = (x * x + 4) / 4;
        cout << a << ' ' << a - 2 << endl;
    }
    return 0;
}

#pragma comment(linker, "/STACK:102400000,102400000")
#include <stdio.h>
#include <string.h>
#include <vector>
#include <iostream>
using namespace std;
vector<int> v[100005];
bool f[1005][1005];
int a[100005], b[100005], c[100005], ans[100005], sum[1005], n, m, q;
void dfs(int x) {
    bool ac = false;
    if (a[x] == 1) {
        if ((f[b[x]][c[x]]^f[b[x]][0]) == false) {
            ac = true;
            sum[b[x]]++;
            ans[x]++;
            f[b[x]][c[x]] = !f[b[x]][c[x]];
        }
    } else if (a[x] == 2) {
        if ((f[b[x]][c[x]]^f[b[x]][0]) == true) {
            ac = true;
            sum[b[x]]--;
            ans[x]--;
            f[b[x]][c[x]] = !f[b[x]][c[x]];
        }
    } else if (a[x] == 3) {
        f[b[x]][0] = !f[b[x]][0];
        ans[x] -= sum[b[x]];
        sum[b[x]] = m - sum[b[x]];
        ans[x] += sum[b[x]];
    }
    for (int i = 0; i < v[x].size(); i++) {
        ans[v[x][i]] = ans[x];
        dfs(v[x][i]);
    }
    if (a[x] == 1 && ac) {
        f[b[x]][c[x]] = !f[b[x]][c[x]];
        sum[b[x]]--;
    }
    if (a[x] == 2 && ac) {
        f[b[x]][c[x]] = !f[b[x]][c[x]];
        sum[b[x]]++;
    }
    if (a[x] == 3) {
        f[b[x]][0] = !f[b[x]][0];
        sum[b[x]] = m - sum[b[x]];
    }
}
int main() {
    scanf("%d%d%d", &n, &m, &q);
    for (int i = 0; i <= q; i++) {
        v[i].clear();
    }
    for (int i = 1; i <= q; i++) {
        scanf("%d%d", &a[i], &b[i]);
        if (a[i] < 3) {
            scanf("%d", &c[i]);
        }
        if (a[i] == 4) {
            v[b[i]].push_back(i);
        } else {
            v[i - 1].push_back(i);
        }
    }
    memset(ans, 0, sizeof(ans));
    memset(sum, 0, sizeof(sum));
    memset(f, false, sizeof(f));
    dfs(0);
    for (int i = 1; i <= q; i++) {
        printf("%d
", ans[i]);
    }
    return 0;
}

#include<stdio.h>
#include<iostream>
#include<stdlib.h>
#include<string.h>
using namespace std;
#define ll long long
const int N = 2001;
int n, m, q, p, flag[N], tb[N], cha[N];
char str[20];
ll a[N][N];
struct aa {
    int x, y, w;
} b[N][N];
int add(int x, int y, ll z) {
    int j;
    while (x <= n) {
        j = y;
        while (j <= m) {
            a[x][j] += z;
            j += j & (-j);
        }
        x += x & (-x);
    }
    return 0;
}
ll sum(int x, int y) {
    ll s, j;
    s = 0;
    while (x > 0) {
        j = y;
        while (j > 0) {
            s += a[x][j];
            j -= j & (-j);
        }
        x -= x & (-x);
    }
    return s;
}
int main(void) {
    //freopen("sduoj.in","r",stdin);
    int i, j, k, x1, x2, y1, y2;
    memset(flag, 0, sizeof(flag));
    scanf("%d%d%d", &n, &m, &p);
    for (i = 1; i <= p; i++) {
        scanf("%d", &tb[i]);
        for (j = 1; j <= tb[i]; j++) {
            scanf("%d%d%d", &b[i][j].x, &b[i][j].y, &b[i][j].w);
        }
        cha[i] = 1;
    }
    scanf("%d", &q);
    while (q--) {
        scanf("%s", str + 1);
        if (str[1] == 'S') {
            scanf("%d", &k);
            cha[k] ^= 1;
        } else {
            for (i = 1; i <= p; i++)if (cha[i]) {
                    for (j = 1; j <= tb[i]; j++) {
                        add(b[i][j].x, b[i][j].y, b[i][j].w * ((flag[i] == 1 ? (-1) : 1)));
                    }
                    flag[i] ^= 1;
                    cha[i] = 0;
                }
            scanf("%d%d%d%d", &x1, &y1, &x2, &y2);
            printf("%I64d
", sum(x2, y2) - sum(x1 - 1, y2) - sum(x2, y1 - 1) + sum(x1 - 1, y1 - 1));
        }
    }
    return 0;
}